Vulnerability-Lookup

CNVD-2026-21836

Vulnerability from cnvd - Published: 2026-05-21

Title

Cisco Identity Services Engine Software远程代码执行漏洞

Description

Cisco Identity Services Engine是一款用于网络访问策略控制与安全合规的集中式身份管理系统。 Cisco Identity Services Engine存在安全漏洞。该漏洞源于未能正确验证用户输入，攻击者可利用该漏洞通过发送特制HTTP请求在受影响设备上执行任意命令。

Severity

高

Patch Name

Cisco Identity Services Engine Software远程代码执行漏洞的补丁

Patch Description

Cisco Identity Services Engine是一款用于网络访问策略控制与安全合规的集中式身份管理系统。 Cisco Identity Services Engine存在安全漏洞。该漏洞源于未能正确验证用户输入，攻击者可利用该漏洞通过发送特制HTTP请求在受影响设备上执行任意命令。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-4fverepv

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-20186

Impacted products

Name
['Cisco Cisco Identity Services Engine Software 3.1.0', 'Cisco Cisco Identity Services Engine Software 3.1.0 p1', 'Cisco Cisco Identity Services Engine Software 3.1.0 p3', 'Cisco Cisco Identity Services Engine Software 3.1.0 p2', 'Cisco Cisco Identity Services Engine Software 3.2.0', 'Cisco Cisco Identity Services Engine Software 3.1.0 p4', 'Cisco Cisco Identity Services Engine Software 3.1.0 p5', 'Cisco Cisco Identity Services Engine Software 3.2.0 p1', 'Cisco Cisco Identity Services Engine Software 3.1.0 p6', 'Cisco Cisco Identity Services Engine Software 3.2.0 p2', 'Cisco Cisco Identity Services Engine Software 3.1.0 p7', 'Cisco Cisco Identity Services Engine Software 3.3.0', 'Cisco Cisco Identity Services Engine Software 3.2.0 p3', 'Cisco Cisco Identity Services Engine Software 3.2.0 p4', 'Cisco Cisco Identity Services Engine Software 3.1.0 p8', 'Cisco Cisco Identity Services Engine Software 3.2.0 p5', 'Cisco Cisco Identity Services Engine Software 3.2.0 p6', 'Cisco Cisco Identity Services Engine Software 3.1.0 p9', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 2', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 1', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 3', 'Cisco Cisco Identity Services Engine Software 3.4.0', 'Cisco Cisco Identity Services Engine Software 3.2.0 p7', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 4', 'Cisco Cisco Identity Services Engine Software 3.4 Patch 1', 'Cisco Cisco Identity Services Engine Software 3.1.0 p10', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 5', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 6', 'Cisco Cisco Identity Services Engine Software 3.4 Patch 2', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 7', 'Cisco Cisco Identity Services Engine Software 3.4 Patch 3']

Name

['Cisco Cisco Identity Services Engine Software 3.1.0', 'Cisco Cisco Identity Services Engine Software 3.1.0 p1', 'Cisco Cisco Identity Services Engine Software 3.1.0 p3', 'Cisco Cisco Identity Services Engine Software 3.1.0 p2', 'Cisco Cisco Identity Services Engine Software 3.2.0', 'Cisco Cisco Identity Services Engine Software 3.1.0 p4', 'Cisco Cisco Identity Services Engine Software 3.1.0 p5', 'Cisco Cisco Identity Services Engine Software 3.2.0 p1', 'Cisco Cisco Identity Services Engine Software 3.1.0 p6', 'Cisco Cisco Identity Services Engine Software 3.2.0 p2', 'Cisco Cisco Identity Services Engine Software 3.1.0 p7', 'Cisco Cisco Identity Services Engine Software 3.3.0', 'Cisco Cisco Identity Services Engine Software 3.2.0 p3', 'Cisco Cisco Identity Services Engine Software 3.2.0 p4', 'Cisco Cisco Identity Services Engine Software 3.1.0 p8', 'Cisco Cisco Identity Services Engine Software 3.2.0 p5', 'Cisco Cisco Identity Services Engine Software 3.2.0 p6', 'Cisco Cisco Identity Services Engine Software 3.1.0 p9', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 2', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 1', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 3', 'Cisco Cisco Identity Services Engine Software 3.4.0', 'Cisco Cisco Identity Services Engine Software 3.2.0 p7', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 4', 'Cisco Cisco Identity Services Engine Software 3.4 Patch 1', 'Cisco Cisco Identity Services Engine Software 3.1.0 p10', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 5', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 6', 'Cisco Cisco Identity Services Engine Software 3.4 Patch 2', 'Cisco Cisco Identity Services Engine Software 3.3 Patch 7', 'Cisco Cisco Identity Services Engine Software 3.4 Patch 3']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-20186",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-20186"
    }
  },
  "description": "Cisco Identity Services Engine\u662f\u4e00\u6b3e\u7528\u4e8e\u7f51\u7edc\u8bbf\u95ee\u7b56\u7565\u63a7\u5236\u4e0e\u5b89\u5168\u5408\u89c4\u7684\u96c6\u4e2d\u5f0f\u8eab\u4efd\u7ba1\u7406\u7cfb\u7edf\u3002\n\nCisco Identity Services Engine\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u53d1\u9001\u7279\u5236HTTP\u8bf7\u6c42\u5728\u53d7\u5f71\u54cd\u8bbe\u5907\u4e0a\u6267\u884c\u4efb\u610f\u547d\u4ee4\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-4fverepv",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-21836",
  "openTime": "2026-05-21",
  "patchDescription": "Cisco Identity Services Engine\u662f\u4e00\u6b3e\u7528\u4e8e\u7f51\u7edc\u8bbf\u95ee\u7b56\u7565\u63a7\u5236\u4e0e\u5b89\u5168\u5408\u89c4\u7684\u96c6\u4e2d\u5f0f\u8eab\u4efd\u7ba1\u7406\u7cfb\u7edf\u3002\r\n\r\nCisco Identity Services Engine\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u53d1\u9001\u7279\u5236HTTP\u8bf7\u6c42\u5728\u53d7\u5f71\u54cd\u8bbe\u5907\u4e0a\u6267\u884c\u4efb\u610f\u547d\u4ee4\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Cisco Identity Services Engine Software\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco Cisco Identity Services Engine Software 3.1.0",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p1",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p3",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p2",
      "Cisco Cisco Identity Services Engine Software 3.2.0",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p4",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p5",
      "Cisco Cisco Identity Services Engine Software 3.2.0 p1",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p6",
      "Cisco Cisco Identity Services Engine Software 3.2.0 p2",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p7",
      "Cisco Cisco Identity Services Engine Software 3.3.0",
      "Cisco Cisco Identity Services Engine Software 3.2.0 p3",
      "Cisco Cisco Identity Services Engine Software 3.2.0 p4",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p8",
      "Cisco Cisco Identity Services Engine Software 3.2.0 p5",
      "Cisco Cisco Identity Services Engine Software 3.2.0 p6",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p9",
      "Cisco Cisco Identity Services Engine Software 3.3 Patch 2",
      "Cisco Cisco Identity Services Engine Software 3.3 Patch 1",
      "Cisco Cisco Identity Services Engine Software 3.3 Patch 3",
      "Cisco Cisco Identity Services Engine Software 3.4.0",
      "Cisco Cisco Identity Services Engine Software 3.2.0 p7",
      "Cisco Cisco Identity Services Engine Software 3.3 Patch 4",
      "Cisco Cisco Identity Services Engine Software 3.4 Patch 1",
      "Cisco Cisco Identity Services Engine Software 3.1.0 p10",
      "Cisco Cisco Identity Services Engine Software 3.3 Patch 5",
      "Cisco Cisco Identity Services Engine Software 3.3 Patch 6",
      "Cisco Cisco Identity Services Engine Software 3.4 Patch 2",
      "Cisco Cisco Identity Services Engine Software 3.3 Patch 7",
      "Cisco Cisco Identity Services Engine Software 3.4 Patch 3"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-20186",
  "serverity": "\u9ad8",
  "submitTime": "2026-04-16",
  "title": "Cisco Identity Services Engine Software\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e"
}

CVE-2026-20186 (GCVE-0-2026-20186)

Vulnerability from cvelistv5 – Published: 2026-04-15 16:03 – Updated: 2026-04-16 03:55

Title

Cisco Identity Services Engine Multiple Authenticated Remote Code Execution Vulnerability

Summary

A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least Read Only Admin credentials. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. In single-node ISE deployments, successful exploitation of these vulnerabilities could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.

Severity

9.9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')

Assigner

cisco

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Identity Services Engine Software	Affected: 3.1.0 Affected: 3.1.0 p1 Affected: 3.1.0 p3 Affected: 3.1.0 p2 Affected: 3.2.0 Affected: 3.1.0 p4 Affected: 3.1.0 p5 Affected: 3.2.0 p1 Affected: 3.1.0 p6 Affected: 3.2.0 p2 Affected: 3.1.0 p7 Affected: 3.3.0 Affected: 3.2.0 p3 Affected: 3.2.0 p4 Affected: 3.1.0 p8 Affected: 3.2.0 p5 Affected: 3.2.0 p6 Affected: 3.1.0 p9 Affected: 3.3 Patch 2 Affected: 3.3 Patch 1 Affected: 3.3 Patch 3 Affected: 3.4.0 Affected: 3.2.0 p7 Affected: 3.3 Patch 4 Affected: 3.4 Patch 1 Affected: 3.1.0 p10 Affected: 3.3 Patch 5 Affected: 3.3 Patch 6 Affected: 3.4 Patch 2 Affected: 3.3 Patch 7 Affected: 3.4 Patch 3

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20186",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-15T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-16T03:55:36.590Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Identity Services Engine Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "3.1.0"
            },
            {
              "status": "affected",
              "version": "3.1.0 p1"
            },
            {
              "status": "affected",
              "version": "3.1.0 p3"
            },
            {
              "status": "affected",
              "version": "3.1.0 p2"
            },
            {
              "status": "affected",
              "version": "3.2.0"
            },
            {
              "status": "affected",
              "version": "3.1.0 p4"
            },
            {
              "status": "affected",
              "version": "3.1.0 p5"
            },
            {
              "status": "affected",
              "version": "3.2.0 p1"
            },
            {
              "status": "affected",
              "version": "3.1.0 p6"
            },
            {
              "status": "affected",
              "version": "3.2.0 p2"
            },
            {
              "status": "affected",
              "version": "3.1.0 p7"
            },
            {
              "status": "affected",
              "version": "3.3.0"
            },
            {
              "status": "affected",
              "version": "3.2.0 p3"
            },
            {
              "status": "affected",
              "version": "3.2.0 p4"
            },
            {
              "status": "affected",
              "version": "3.1.0 p8"
            },
            {
              "status": "affected",
              "version": "3.2.0 p5"
            },
            {
              "status": "affected",
              "version": "3.2.0 p6"
            },
            {
              "status": "affected",
              "version": "3.1.0 p9"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 2"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 1"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 3"
            },
            {
              "status": "affected",
              "version": "3.4.0"
            },
            {
              "status": "affected",
              "version": "3.2.0 p7"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 4"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 1"
            },
            {
              "status": "affected",
              "version": "3.1.0 p10"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 5"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 6"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 2"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 7"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least Read Only Admin credentials.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to\u0026nbsp;root. In single-node ISE deployments, successful exploitation of these vulnerabilities could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "cvssV3_1"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-77",
              "description": "Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
              "lang": "en",
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            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-15T16:03:35.310Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-ise-rce-4fverepv",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-4fverepv"
        }
      ],
      "source": {
        "advisory": "cisco-sa-ise-rce-4fverepv",
        "defects": [
          "CSCwq21242"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Identity Services Engine Multiple Authenticated Remote Code Execution Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20186",
    "datePublished": "2026-04-15T16:03:35.310Z",
    "dateReserved": "2025-10-08T11:59:15.394Z",
    "dateUpdated": "2026-04-16T03:55:36.590Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2026-21836

CVE-2026-20186 (GCVE-0-2026-20186)

Tags

Sightings

Nomenclature