{
  "document": {
    "acknowledgments": [
      {
        "summary": "This vulnerability was found during the resolution of a Cisco TAC support case."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.\r\n\r\nCisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the September 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581\"]",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects Cisco IOS XE Software if it is running on one of the following Cisco products:\r\n\r\n1000 Integrated Services Routers (ISRs)\r\n4000 Series ISRs\r\nASR 1000 Series Aggregation Services Routers\r\nCloud Services Router (CSR) 1000V Series\r\nIntegrated Services Virtual (ISRv) Routers\r\n\r\nIn addition, if the device is running Cisco IOS XE Software Release 17.3.1 or a later release that is earlier than the first fixed release, the device is considered vulnerable.\r\n\r\nIf the device is running a Cisco IOS XE Software release earlier than Release 17.3.1, it is considered vulnerable only if it does not support Autonomic Networking.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n  Determine the Device Configuration\r\nTo determine whether a device does not support Autonomic Networking, use the show running-config all | include autonomic command in the CLI. The following example shows the output of the command for a device that is running Cisco IOS XE Software and does not support Autonomic Networking:\r\n\r\n\r\nRouter# show running-config all | include autonomic\r\nRouter#\r\n\r\nThe following example shows the output if a device supports Autonomic Networking:\r\n\r\n\r\nRouter# show running-config all | include autonomic\r\nautonomic\r\nautonomic\r\nautonomic\r\nRouter#",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that these vulnerabilities do not affect the following Cisco products:\r\n\r\nIOS Software\r\nIOS XR Software\r\nMeraki products\r\nNX-OS Software",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "If a device is running a Cisco IOS XE Software release earlier than Release 17.3.1, changing the license level to one that supports Autonomic Networking, such as adventerprise, can be used as a workaround. If the device is running Cisco IOS XE Software Release 17.3.1 or later, there are no workarounds that address this vulnerability.\r\n\r\nIf this vulnerability has been exploited and the attack has stopped, administrators can set a maximum hold-queue value that is greater than the currently configured value for the affected interface to allow traffic to pass until a reload can be scheduled. The following example shows how to set the value to 350 by using the hold-queue in interface configuration command:\r\n\r\n\r\nRouter# configure terminal\r\nRouter(config)# interface gigabitEthernet 1  Router(config-if)# hold-queue 350 in\r\n\r\nCisco IOS Embedded Event Manager\r\n\r\nA Cisco IOS Embedded Event Manager (EEM) policy that is based on Tool Command Language (Tcl) can be used on affected devices running Cisco IOS Software to detect and identify interface queue wedges that are caused by this vulnerability. The policy allows administrators to monitor interfaces for devices running Cisco IOS Software and detect when input queues are full. When Cisco IOS EEM detects potential exploitation of this vulnerability, the policy sends an alert to the network administrator, who can then decide to implement an upgrade, implement suitable mitigations, or reload the device to clear the input queue.\r\n\r\nThe Tcl script is available for download at the following link: https://supportforums.cisco.com/docs/DOC-19337 [\"https://supportforums.cisco.com/docs/DOC-19337\"]\r\n\r\nWhile this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n    Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (\u201cCombined First Fixed\u201d).\r\n\r\nCustomers can use the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to search advisories in the following ways:\r\n\r\nChoose the software and one or more releases\r\nUpload a .txt file that includes a list of specific releases\r\nEnter the output of the show version command\r\n\r\nAfter initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.\r\n\r\nCustomers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release\u2014for example, 15.1(4)M2 or 3.13.8S:\r\n\r\n\r\n\r\nBy default, the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
        "title": "Vulnerability Policy"
      },
      {
        "category": "general",
        "text": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "This vulnerability was found during the resolution of a Cisco TAC support case.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
        "title": "Legal Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@cisco.com",
      "issuing_authority": "Cisco PSIRT",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW"
      },
      {
        "category": "external",
        "summary": "Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication",
        "url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "https://supportforums.cisco.com/docs/DOC-19337",
        "url": "https://supportforums.cisco.com/docs/DOC-19337"
      },
      {
        "category": "external",
        "summary": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html",
        "url": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"
      },
      {
        "category": "external",
        "summary": "considering software upgrades",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;Security Advisories page",
        "url": "https://www.cisco.com/go/psirt"
      },
      {
        "category": "external",
        "summary": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html",
        "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;Software Checker",
        "url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
      }
    ],
    "title": "Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability",
    "tracking": {
      "current_release_date": "2021-09-22T16:00:00+00:00",
      "generator": {
        "date": "2024-05-10T23:09:16+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-quewedge-69BsHUBW",
      "initial_release_date": "2021-09-22T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2021-09-22T15:48:49+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.2.1",
                    "product": {
                      "name": "16.2.1",
                      "product_id": "CSAFPID-213809"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.2.2",
                    "product": {
                      "name": "16.2.2",
                      "product_id": "CSAFPID-217253"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.2"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.3.1",
                    "product": {
                      "name": "16.3.1",
                      "product_id": "CSAFPID-213960"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.2",
                    "product": {
                      "name": "16.3.2",
                      "product_id": "CSAFPID-217255"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.3",
                    "product": {
                      "name": "16.3.3",
                      "product_id": "CSAFPID-217256"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.1a",
                    "product": {
                      "name": "16.3.1a",
                      "product_id": "CSAFPID-220802"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.4",
                    "product": {
                      "name": "16.3.4",
                      "product_id": "CSAFPID-222711"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.5",
                    "product": {
                      "name": "16.3.5",
                      "product_id": "CSAFPID-229124"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.5b",
                    "product": {
                      "name": "16.3.5b",
                      "product_id": "CSAFPID-231187"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.6",
                    "product": {
                      "name": "16.3.6",
                      "product_id": "CSAFPID-231667"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.7",
                    "product": {
                      "name": "16.3.7",
                      "product_id": "CSAFPID-239264"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.8",
                    "product": {
                      "name": "16.3.8",
                      "product_id": "CSAFPID-251165"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.9",
                    "product": {
                      "name": "16.3.9",
                      "product_id": "CSAFPID-262389"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.10",
                    "product": {
                      "name": "16.3.10",
                      "product_id": "CSAFPID-273563"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.3.11",
                    "product": {
                      "name": "16.3.11",
                      "product_id": "CSAFPID-278402"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.3"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.4.1",
                    "product": {
                      "name": "16.4.1",
                      "product_id": "CSAFPID-214051"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.4.2",
                    "product": {
                      "name": "16.4.2",
                      "product_id": "CSAFPID-217257"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.4.3",
                    "product": {
                      "name": "16.4.3",
                      "product_id": "CSAFPID-231390"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.4"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.5.1",
                    "product": {
                      "name": "16.5.1",
                      "product_id": "CSAFPID-217259"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.5.1a",
                    "product": {
                      "name": "16.5.1a",
                      "product_id": "CSAFPID-225784"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.5.1b",
                    "product": {
                      "name": "16.5.1b",
                      "product_id": "CSAFPID-226330"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.5.2",
                    "product": {
                      "name": "16.5.2",
                      "product_id": "CSAFPID-229187"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.5.3",
                    "product": {
                      "name": "16.5.3",
                      "product_id": "CSAFPID-232461"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.5"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.6.1",
                    "product": {
                      "name": "16.6.1",
                      "product_id": "CSAFPID-218901"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.2",
                    "product": {
                      "name": "16.6.2",
                      "product_id": "CSAFPID-228706"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.3",
                    "product": {
                      "name": "16.6.3",
                      "product_id": "CSAFPID-231682"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.4",
                    "product": {
                      "name": "16.6.4",
                      "product_id": "CSAFPID-233155"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.5",
                    "product": {
                      "name": "16.6.5",
                      "product_id": "CSAFPID-241736"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.4s",
                    "product": {
                      "name": "16.6.4s",
                      "product_id": "CSAFPID-244900"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.4a",
                    "product": {
                      "name": "16.6.4a",
                      "product_id": "CSAFPID-247629"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.5a",
                    "product": {
                      "name": "16.6.5a",
                      "product_id": "CSAFPID-252235"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.6",
                    "product": {
                      "name": "16.6.6",
                      "product_id": "CSAFPID-252914"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.5b",
                    "product": {
                      "name": "16.6.5b",
                      "product_id": "CSAFPID-258170"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.7",
                    "product": {
                      "name": "16.6.7",
                      "product_id": "CSAFPID-261241"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.7a",
                    "product": {
                      "name": "16.6.7a",
                      "product_id": "CSAFPID-270097"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.6.8",
                    "product": {
                      "name": "16.6.8",
                      "product_id": "CSAFPID-277148"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.6"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.7.1",
                    "product": {
                      "name": "16.7.1",
                      "product_id": "CSAFPID-218903"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.1a",
                    "product": {
                      "name": "16.7.1a",
                      "product_id": "CSAFPID-231389"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.1b",
                    "product": {
                      "name": "16.7.1b",
                      "product_id": "CSAFPID-232767"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.2",
                    "product": {
                      "name": "16.7.2",
                      "product_id": "CSAFPID-236837"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.3",
                    "product": {
                      "name": "16.7.3",
                      "product_id": "CSAFPID-244070"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.7.4",
                    "product": {
                      "name": "16.7.4",
                      "product_id": "CSAFPID-258388"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.7"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.8.1",
                    "product": {
                      "name": "16.8.1",
                      "product_id": "CSAFPID-218905"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1a",
                    "product": {
                      "name": "16.8.1a",
                      "product_id": "CSAFPID-235307"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1b",
                    "product": {
                      "name": "16.8.1b",
                      "product_id": "CSAFPID-235858"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1s",
                    "product": {
                      "name": "16.8.1s",
                      "product_id": "CSAFPID-236834"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.1c",
                    "product": {
                      "name": "16.8.1c",
                      "product_id": "CSAFPID-237460"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.2",
                    "product": {
                      "name": "16.8.2",
                      "product_id": "CSAFPID-244071"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.8.3",
                    "product": {
                      "name": "16.8.3",
                      "product_id": "CSAFPID-257984"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.8"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.9.1",
                    "product": {
                      "name": "16.9.1",
                      "product_id": "CSAFPID-225856"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.2",
                    "product": {
                      "name": "16.9.2",
                      "product_id": "CSAFPID-232008"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.1a",
                    "product": {
                      "name": "16.9.1a",
                      "product_id": "CSAFPID-242308"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.1b",
                    "product": {
                      "name": "16.9.1b",
                      "product_id": "CSAFPID-243362"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.1s",
                    "product": {
                      "name": "16.9.1s",
                      "product_id": "CSAFPID-244530"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.1c",
                    "product": {
                      "name": "16.9.1c",
                      "product_id": "CSAFPID-245375"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.1d",
                    "product": {
                      "name": "16.9.1d",
                      "product_id": "CSAFPID-248242"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.3",
                    "product": {
                      "name": "16.9.3",
                      "product_id": "CSAFPID-251075"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.2a",
                    "product": {
                      "name": "16.9.2a",
                      "product_id": "CSAFPID-251166"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.2s",
                    "product": {
                      "name": "16.9.2s",
                      "product_id": "CSAFPID-252272"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.3h",
                    "product": {
                      "name": "16.9.3h",
                      "product_id": "CSAFPID-258229"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.4",
                    "product": {
                      "name": "16.9.4",
                      "product_id": "CSAFPID-262390"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.3s",
                    "product": {
                      "name": "16.9.3s",
                      "product_id": "CSAFPID-262549"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.3a",
                    "product": {
                      "name": "16.9.3a",
                      "product_id": "CSAFPID-263804"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.4c",
                    "product": {
                      "name": "16.9.4c",
                      "product_id": "CSAFPID-268921"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.5",
                    "product": {
                      "name": "16.9.5",
                      "product_id": "CSAFPID-271798"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.5f",
                    "product": {
                      "name": "16.9.5f",
                      "product_id": "CSAFPID-276837"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.9.6",
                    "product": {
                      "name": "16.9.6",
                      "product_id": "CSAFPID-277945"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.9"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.10.1",
                    "product": {
                      "name": "16.10.1",
                      "product_id": "CSAFPID-225858"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1a",
                    "product": {
                      "name": "16.10.1a",
                      "product_id": "CSAFPID-250629"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1b",
                    "product": {
                      "name": "16.10.1b",
                      "product_id": "CSAFPID-252045"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1s",
                    "product": {
                      "name": "16.10.1s",
                      "product_id": "CSAFPID-252913"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1e",
                    "product": {
                      "name": "16.10.1e",
                      "product_id": "CSAFPID-257955"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.2",
                    "product": {
                      "name": "16.10.2",
                      "product_id": "CSAFPID-260917"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.3",
                    "product": {
                      "name": "16.10.3",
                      "product_id": "CSAFPID-273112"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.10"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.11.1",
                    "product": {
                      "name": "16.11.1",
                      "product_id": "CSAFPID-227918"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.11.1a",
                    "product": {
                      "name": "16.11.1a",
                      "product_id": "CSAFPID-252271"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.11.1b",
                    "product": {
                      "name": "16.11.1b",
                      "product_id": "CSAFPID-260741"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.11.2",
                    "product": {
                      "name": "16.11.2",
                      "product_id": "CSAFPID-261240"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.11.1s",
                    "product": {
                      "name": "16.11.1s",
                      "product_id": "CSAFPID-261465"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.11.1c",
                    "product": {
                      "name": "16.11.1c",
                      "product_id": "CSAFPID-264096"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.11"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.12.1",
                    "product": {
                      "name": "16.12.1",
                      "product_id": "CSAFPID-227920"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.1s",
                    "product": {
                      "name": "16.12.1s",
                      "product_id": "CSAFPID-265735"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.1a",
                    "product": {
                      "name": "16.12.1a",
                      "product_id": "CSAFPID-265841"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.1c",
                    "product": {
                      "name": "16.12.1c",
                      "product_id": "CSAFPID-267110"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.2",
                    "product": {
                      "name": "16.12.2",
                      "product_id": "CSAFPID-267605"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.2a",
                    "product": {
                      "name": "16.12.2a",
                      "product_id": "CSAFPID-272047"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.3",
                    "product": {
                      "name": "16.12.3",
                      "product_id": "CSAFPID-273445"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.2s",
                    "product": {
                      "name": "16.12.2s",
                      "product_id": "CSAFPID-273509"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.1t",
                    "product": {
                      "name": "16.12.1t",
                      "product_id": "CSAFPID-274832"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.2t",
                    "product": {
                      "name": "16.12.2t",
                      "product_id": "CSAFPID-275538"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.4",
                    "product": {
                      "name": "16.12.4",
                      "product_id": "CSAFPID-277147"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.3s",
                    "product": {
                      "name": "16.12.3s",
                      "product_id": "CSAFPID-277255"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.1z",
                    "product": {
                      "name": "16.12.1z",
                      "product_id": "CSAFPID-277256"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.3a",
                    "product": {
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                  },
                  {
                    "category": "service_pack",
                    "name": "16.12.4a",
                    "product": {
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                      "product_id": "CSAFPID-278881"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.12"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "17.1.1",
                    "product": {
                      "name": "17.1.1",
                      "product_id": "CSAFPID-245377"
                    }
                  },
                  {
                    "category": "service_pack",
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                    "product": {
                      "name": "17.1.1a",
                      "product_id": "CSAFPID-272932"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.1.1s",
                    "product": {
                      "name": "17.1.1s",
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                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.1.2",
                    "product": {
                      "name": "17.1.2",
                      "product_id": "CSAFPID-277338"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.1.1t",
                    "product": {
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                      "product_id": "CSAFPID-277348"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.1.3",
                    "product": {
                      "name": "17.1.3",
                      "product_id": "CSAFPID-280652"
                    }
                  }
                ],
                "category": "product_version",
                "name": "17.1"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "17.2.1",
                    "product": {
                      "name": "17.2.1",
                      "product_id": "CSAFPID-251225"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.2.1r",
                    "product": {
                      "name": "17.2.1r",
                      "product_id": "CSAFPID-277194"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.2.1a",
                    "product": {
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                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.2.1v",
                    "product": {
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                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.2.2",
                    "product": {
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                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.2.3",
                    "product": {
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                    }
                  }
                ],
                "category": "product_version",
                "name": "17.2"
              },
              {
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                  {
                    "category": "service_pack",
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                    "product": {
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                      "product_id": "CSAFPID-254712"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.3.2",
                    "product": {
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                      "product_id": "CSAFPID-277099"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.3.1a",
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                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "17.3.2a",
                    "product": {
                      "name": "17.3.2a",
                      "product_id": "CSAFPID-280555"
                    }
                  }
                ],
                "category": "product_version",
                "name": "17.3"
              }
            ],
            "category": "product_family",
            "name": "Cisco IOS XE Software"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-1621",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvw43399"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-213809",
          "CSAFPID-213960",
          "CSAFPID-214051",
          "CSAFPID-217253",
          "CSAFPID-217255",
          "CSAFPID-217256",
          "CSAFPID-217257",
          "CSAFPID-217259",
          "CSAFPID-218901",
          "CSAFPID-218903",
          "CSAFPID-218905",
          "CSAFPID-220802",
          "CSAFPID-222711",
          "CSAFPID-225784",
          "CSAFPID-225856",
          "CSAFPID-225858",
          "CSAFPID-226330",
          "CSAFPID-227918",
          "CSAFPID-227920",
          "CSAFPID-228706",
          "CSAFPID-229124",
          "CSAFPID-229187",
          "CSAFPID-231187",
          "CSAFPID-231389",
          "CSAFPID-231390",
          "CSAFPID-231667",
          "CSAFPID-231682",
          "CSAFPID-232008",
          "CSAFPID-232461",
          "CSAFPID-232767",
          "CSAFPID-233155",
          "CSAFPID-235307",
          "CSAFPID-235858",
          "CSAFPID-236834",
          "CSAFPID-236837",
          "CSAFPID-237460",
          "CSAFPID-239264",
          "CSAFPID-241736",
          "CSAFPID-242308",
          "CSAFPID-243362",
          "CSAFPID-244070",
          "CSAFPID-244071",
          "CSAFPID-244530",
          "CSAFPID-244900",
          "CSAFPID-245375",
          "CSAFPID-245377",
          "CSAFPID-247629",
          "CSAFPID-248242",
          "CSAFPID-250629",
          "CSAFPID-251075",
          "CSAFPID-251165",
          "CSAFPID-251166",
          "CSAFPID-251225",
          "CSAFPID-252045",
          "CSAFPID-252235",
          "CSAFPID-252271",
          "CSAFPID-252272",
          "CSAFPID-252913",
          "CSAFPID-252914",
          "CSAFPID-254712",
          "CSAFPID-257955",
          "CSAFPID-257984",
          "CSAFPID-258170",
          "CSAFPID-258229",
          "CSAFPID-258388",
          "CSAFPID-260741",
          "CSAFPID-260917",
          "CSAFPID-261240",
          "CSAFPID-261241",
          "CSAFPID-261465",
          "CSAFPID-262389",
          "CSAFPID-262390",
          "CSAFPID-262549",
          "CSAFPID-263804",
          "CSAFPID-264096",
          "CSAFPID-265735",
          "CSAFPID-265841",
          "CSAFPID-267110",
          "CSAFPID-267605",
          "CSAFPID-268921",
          "CSAFPID-270097",
          "CSAFPID-271798",
          "CSAFPID-272047",
          "CSAFPID-272932",
          "CSAFPID-273112",
          "CSAFPID-273445",
          "CSAFPID-273509",
          "CSAFPID-273563",
          "CSAFPID-274818",
          "CSAFPID-274832",
          "CSAFPID-275538",
          "CSAFPID-276837",
          "CSAFPID-277099",
          "CSAFPID-277147",
          "CSAFPID-277148",
          "CSAFPID-277194",
          "CSAFPID-277255",
          "CSAFPID-277256",
          "CSAFPID-277321",
          "CSAFPID-277338",
          "CSAFPID-277343",
          "CSAFPID-277348",
          "CSAFPID-277945",
          "CSAFPID-278002",
          "CSAFPID-278402",
          "CSAFPID-278504",
          "CSAFPID-278881",
          "CSAFPID-279338",
          "CSAFPID-280555",
          "CSAFPID-280652",
          "CSAFPID-280939"
        ]
      },
      "release_date": "2021-09-22T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-213809",
            "CSAFPID-213960",
            "CSAFPID-214051",
            "CSAFPID-217253",
            "CSAFPID-217255",
            "CSAFPID-217256",
            "CSAFPID-217257",
            "CSAFPID-217259",
            "CSAFPID-218901",
            "CSAFPID-218903",
            "CSAFPID-218905",
            "CSAFPID-220802",
            "CSAFPID-222711",
            "CSAFPID-225784",
            "CSAFPID-225856",
            "CSAFPID-225858",
            "CSAFPID-226330",
            "CSAFPID-227918",
            "CSAFPID-227920",
            "CSAFPID-228706",
            "CSAFPID-229124",
            "CSAFPID-229187",
            "CSAFPID-231187",
            "CSAFPID-231389",
            "CSAFPID-231390",
            "CSAFPID-231667",
            "CSAFPID-231682",
            "CSAFPID-232008",
            "CSAFPID-232461",
            "CSAFPID-232767",
            "CSAFPID-233155",
            "CSAFPID-235307",
            "CSAFPID-235858",
            "CSAFPID-236834",
            "CSAFPID-236837",
            "CSAFPID-237460",
            "CSAFPID-239264",
            "CSAFPID-241736",
            "CSAFPID-242308",
            "CSAFPID-243362",
            "CSAFPID-244070",
            "CSAFPID-244071",
            "CSAFPID-244530",
            "CSAFPID-244900",
            "CSAFPID-245375",
            "CSAFPID-245377",
            "CSAFPID-247629",
            "CSAFPID-248242",
            "CSAFPID-250629",
            "CSAFPID-251075",
            "CSAFPID-251165",
            "CSAFPID-251166",
            "CSAFPID-251225",
            "CSAFPID-252045",
            "CSAFPID-252235",
            "CSAFPID-252271",
            "CSAFPID-252272",
            "CSAFPID-252913",
            "CSAFPID-252914",
            "CSAFPID-254712",
            "CSAFPID-257955",
            "CSAFPID-257984",
            "CSAFPID-258170",
            "CSAFPID-258229",
            "CSAFPID-258388",
            "CSAFPID-260741",
            "CSAFPID-260917",
            "CSAFPID-261240",
            "CSAFPID-261241",
            "CSAFPID-261465",
            "CSAFPID-262389",
            "CSAFPID-262390",
            "CSAFPID-262549",
            "CSAFPID-263804",
            "CSAFPID-264096",
            "CSAFPID-265735",
            "CSAFPID-265841",
            "CSAFPID-267110",
            "CSAFPID-267605",
            "CSAFPID-268921",
            "CSAFPID-270097",
            "CSAFPID-271798",
            "CSAFPID-272047",
            "CSAFPID-272932",
            "CSAFPID-273112",
            "CSAFPID-273445",
            "CSAFPID-273509",
            "CSAFPID-273563",
            "CSAFPID-274818",
            "CSAFPID-274832",
            "CSAFPID-275538",
            "CSAFPID-276837",
            "CSAFPID-277099",
            "CSAFPID-277147",
            "CSAFPID-277148",
            "CSAFPID-277194",
            "CSAFPID-277255",
            "CSAFPID-277256",
            "CSAFPID-277321",
            "CSAFPID-277338",
            "CSAFPID-277343",
            "CSAFPID-277348",
            "CSAFPID-277945",
            "CSAFPID-278002",
            "CSAFPID-278402",
            "CSAFPID-278504",
            "CSAFPID-278881",
            "CSAFPID-279338",
            "CSAFPID-280555",
            "CSAFPID-280652",
            "CSAFPID-280939"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-213809",
            "CSAFPID-213960",
            "CSAFPID-214051",
            "CSAFPID-217253",
            "CSAFPID-217255",
            "CSAFPID-217256",
            "CSAFPID-217257",
            "CSAFPID-217259",
            "CSAFPID-218901",
            "CSAFPID-218903",
            "CSAFPID-218905",
            "CSAFPID-220802",
            "CSAFPID-222711",
            "CSAFPID-225784",
            "CSAFPID-225856",
            "CSAFPID-225858",
            "CSAFPID-226330",
            "CSAFPID-227918",
            "CSAFPID-227920",
            "CSAFPID-228706",
            "CSAFPID-229124",
            "CSAFPID-229187",
            "CSAFPID-231187",
            "CSAFPID-231389",
            "CSAFPID-231390",
            "CSAFPID-231667",
            "CSAFPID-231682",
            "CSAFPID-232008",
            "CSAFPID-232461",
            "CSAFPID-232767",
            "CSAFPID-233155",
            "CSAFPID-235307",
            "CSAFPID-235858",
            "CSAFPID-236834",
            "CSAFPID-236837",
            "CSAFPID-237460",
            "CSAFPID-239264",
            "CSAFPID-241736",
            "CSAFPID-242308",
            "CSAFPID-243362",
            "CSAFPID-244070",
            "CSAFPID-244071",
            "CSAFPID-244530",
            "CSAFPID-244900",
            "CSAFPID-245375",
            "CSAFPID-245377",
            "CSAFPID-247629",
            "CSAFPID-248242",
            "CSAFPID-250629",
            "CSAFPID-251075",
            "CSAFPID-251165",
            "CSAFPID-251166",
            "CSAFPID-251225",
            "CSAFPID-252045",
            "CSAFPID-252235",
            "CSAFPID-252271",
            "CSAFPID-252272",
            "CSAFPID-252913",
            "CSAFPID-252914",
            "CSAFPID-254712",
            "CSAFPID-257955",
            "CSAFPID-257984",
            "CSAFPID-258170",
            "CSAFPID-258229",
            "CSAFPID-258388",
            "CSAFPID-260741",
            "CSAFPID-260917",
            "CSAFPID-261240",
            "CSAFPID-261241",
            "CSAFPID-261465",
            "CSAFPID-262389",
            "CSAFPID-262390",
            "CSAFPID-262549",
            "CSAFPID-263804",
            "CSAFPID-264096",
            "CSAFPID-265735",
            "CSAFPID-265841",
            "CSAFPID-267110",
            "CSAFPID-267605",
            "CSAFPID-268921",
            "CSAFPID-270097",
            "CSAFPID-271798",
            "CSAFPID-272047",
            "CSAFPID-272932",
            "CSAFPID-273112",
            "CSAFPID-273445",
            "CSAFPID-273509",
            "CSAFPID-273563",
            "CSAFPID-274818",
            "CSAFPID-274832",
            "CSAFPID-275538",
            "CSAFPID-276837",
            "CSAFPID-277099",
            "CSAFPID-277147",
            "CSAFPID-277148",
            "CSAFPID-277194",
            "CSAFPID-277255",
            "CSAFPID-277256",
            "CSAFPID-277321",
            "CSAFPID-277338",
            "CSAFPID-277343",
            "CSAFPID-277348",
            "CSAFPID-277945",
            "CSAFPID-278002",
            "CSAFPID-278402",
            "CSAFPID-278504",
            "CSAFPID-278881",
            "CSAFPID-279338",
            "CSAFPID-280555",
            "CSAFPID-280652",
            "CSAFPID-280939"
          ]
        }
      ],
      "title": "Cisco IOS XE Interface Queue Wedge Denial of Service Vulnerability"
    }
  ]
}