Vulnerability-Lookup

CNVD-2026-27673

Vulnerability from cnvd - Published: 2026-07-13

Title

Cisco Catalyst Center路径遍历漏洞（CNVD-2026-27673）

Description

Cisco Catalyst Center是美国Cisco公司的一款网络管理平台。 Cisco Catalyst Center存在路径遍历漏洞。该漏洞源于程序未能正确地过滤资源或文件路径中的特殊元素，攻击者可利用该漏洞通过发送特制HTTP请求读取受限容器中的任意文件。

Severity

高

Patch Name

Cisco Catalyst Center路径遍历漏洞（CNVD-2026-27673）的补丁

Patch Description

Cisco Catalyst Center是美国Cisco公司的一款网络管理平台。 Cisco Catalyst Center存在路径遍历漏洞。该漏洞源于程序未能正确地过滤资源或文件路径中的特殊元素，攻击者可利用该漏洞通过发送特制HTTP请求读取受限容器中的任意文件。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-catc-file-read-wLH2vf8X

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-20191

Impacted products

Name
['Cisco Catalyst Center 2.3.7.0-VA', 'Cisco Catalyst Center 2.3.7.5-VA', 'Cisco Catalyst Center 2.3.7.6-VA', 'Cisco Catalyst Center 2.3.7.7-VA', 'Cisco Catalyst Center 2.3.7.9-VA', 'Cisco Catalyst Center 3.1.3', 'Cisco Catalyst Center 3.1.3-VA', 'Cisco Catalyst Center 2.3.7.10-VA', 'Cisco Catalyst Center 3.1.5', 'Cisco Catalyst Center 3.1.5-VA', 'Cisco Catalyst Center 3.1.5-VA on AWS', 'Cisco Catalyst Center 3.1.5-RevUp', 'Cisco Catalyst Center 3.1.6', 'Cisco Catalyst Center 3.1.6-VA', 'Cisco Catalyst Center 3.1.6-BETA', 'Cisco Catalyst Center 3.1.6-GSMU100', 'Cisco Catalyst Center 3.1.6-VA-GSMU100']

Name

['Cisco Catalyst Center 2.3.7.0-VA', 'Cisco Catalyst Center 2.3.7.5-VA', 'Cisco Catalyst Center 2.3.7.6-VA', 'Cisco Catalyst Center 2.3.7.7-VA', 'Cisco Catalyst Center 2.3.7.9-VA', 'Cisco Catalyst Center 3.1.3', 'Cisco Catalyst Center 3.1.3-VA', 'Cisco Catalyst Center 2.3.7.10-VA', 'Cisco Catalyst Center 3.1.5', 'Cisco Catalyst Center 3.1.5-VA', 'Cisco Catalyst Center 3.1.5-VA on AWS', 'Cisco Catalyst Center 3.1.5-RevUp', 'Cisco Catalyst Center 3.1.6', 'Cisco Catalyst Center 3.1.6-VA', 'Cisco Catalyst Center 3.1.6-BETA', 'Cisco Catalyst Center 3.1.6-GSMU100', 'Cisco Catalyst Center 3.1.6-VA-GSMU100']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-20191",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-20191"
    }
  },
  "description": "Cisco Catalyst Center\u662f\u7f8e\u56fdCisco\u516c\u53f8\u7684\u4e00\u6b3e\u7f51\u7edc\u7ba1\u7406\u5e73\u53f0\u3002\n\nCisco Catalyst Center\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5730\u8fc7\u6ee4\u8d44\u6e90\u6216\u6587\u4ef6\u8def\u5f84\u4e2d\u7684\u7279\u6b8a\u5143\u7d20\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u53d1\u9001\u7279\u5236HTTP\u8bf7\u6c42\u8bfb\u53d6\u53d7\u9650\u5bb9\u5668\u4e2d\u7684\u4efb\u610f\u6587\u4ef6\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-catc-file-read-wLH2vf8X",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-27673",
  "openTime": "2026-07-13",
  "patchDescription": "Cisco Catalyst Center\u662f\u7f8e\u56fdCisco\u516c\u53f8\u7684\u4e00\u6b3e\u7f51\u7edc\u7ba1\u7406\u5e73\u53f0\u3002\r\n\r\nCisco Catalyst Center\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5730\u8fc7\u6ee4\u8d44\u6e90\u6216\u6587\u4ef6\u8def\u5f84\u4e2d\u7684\u7279\u6b8a\u5143\u7d20\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u53d1\u9001\u7279\u5236HTTP\u8bf7\u6c42\u8bfb\u53d6\u53d7\u9650\u5bb9\u5668\u4e2d\u7684\u4efb\u610f\u6587\u4ef6\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 Catalyst Center\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff08CNVD-2026-27673\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco Catalyst Center 2.3.7.0-VA",
      "Cisco Catalyst Center 2.3.7.5-VA",
      "Cisco Catalyst Center 2.3.7.6-VA",
      "Cisco Catalyst Center 2.3.7.7-VA",
      "Cisco Catalyst Center 2.3.7.9-VA",
      "Cisco Catalyst Center 3.1.3",
      "Cisco Catalyst Center 3.1.3-VA",
      "Cisco Catalyst Center 2.3.7.10-VA",
      "Cisco Catalyst Center 3.1.5",
      "Cisco Catalyst Center 3.1.5-VA",
      "Cisco Catalyst Center 3.1.5-VA on AWS",
      "Cisco Catalyst Center 3.1.5-RevUp",
      "Cisco Catalyst Center 3.1.6",
      "Cisco Catalyst Center 3.1.6-VA",
      "Cisco Catalyst Center 3.1.6-BETA",
      "Cisco Catalyst Center 3.1.6-GSMU100",
      "Cisco Catalyst Center 3.1.6-VA-GSMU100"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-20191",
  "serverity": "\u9ad8",
  "submitTime": "2026-07-08",
  "title": "Cisco Catalyst Center\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff08CNVD-2026-27673\uff09"
}

CVE-2026-20191 (GCVE-0-2026-20191)

Vulnerability from cvelistv5 – Published: 2026-07-01 16:27 – Updated: 2026-07-01 17:25

Title

Cisco Catalyst Center Arbitrary File Read Vulnerability

Summary

A vulnerability in Cisco Catalyst Center could allow an unauthenticated, remote attacker to read arbitrary files from a restricted container.  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 read arbitrary files from a restricted container of the affected device.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-01 17:18 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

cisco

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Catalyst Center	Affected: 2.3.7.0-VA Affected: 2.3.7.5-VA Affected: 2.3.7.6-VA Affected: 2.3.7.7-VA Affected: 2.3.7.9-VA Affected: 3.1.3 Affected: 3.1.3-VA Affected: 2.3.7.10-VA Affected: 3.1.5 Affected: 3.1.5-VA Affected: 3.1.5-VA on AWS Affected: 3.1.5-RevUp Affected: 3.1.6 Affected: 3.1.6-VA Affected: 3.1.6-BETA Affected: 3.1.6-GSMU100 Affected: 3.1.6-VA-GSMU100

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20191",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-01T17:18:27.744122Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-01T17:25:09.294Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Catalyst Center",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "2.3.7.0-VA"
            },
            {
              "status": "affected",
              "version": "2.3.7.5-VA"
            },
            {
              "status": "affected",
              "version": "2.3.7.6-VA"
            },
            {
              "status": "affected",
              "version": "2.3.7.7-VA"
            },
            {
              "status": "affected",
              "version": "2.3.7.9-VA"
            },
            {
              "status": "affected",
              "version": "3.1.3"
            },
            {
              "status": "affected",
              "version": "3.1.3-VA"
            },
            {
              "status": "affected",
              "version": "2.3.7.10-VA"
            },
            {
              "status": "affected",
              "version": "3.1.5"
            },
            {
              "status": "affected",
              "version": "3.1.5-VA"
            },
            {
              "status": "affected",
              "version": "3.1.5-VA on AWS"
            },
            {
              "status": "affected",
              "version": "3.1.5-RevUp"
            },
            {
              "status": "affected",
              "version": "3.1.6"
            },
            {
              "status": "affected",
              "version": "3.1.6-VA"
            },
            {
              "status": "affected",
              "version": "3.1.6-BETA"
            },
            {
              "status": "affected",
              "version": "3.1.6-GSMU100"
            },
            {
              "status": "affected",
              "version": "3.1.6-VA-GSMU100"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-01T16:27:32.642Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-catc-file-read-wLH2vf8X",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catc-file-read-wLH2vf8X"
        }
      ],
      "source": {
        "advisory": "cisco-sa-catc-file-read-wLH2vf8X",
        "defects": [
          "CSCwt73509"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Catalyst Center Arbitrary File Read Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20191",
    "datePublished": "2026-07-01T16:27:32.642Z",
    "dateReserved": "2025-10-08T11:59:15.395Z",
    "dateUpdated": "2026-07-01T17:25:09.294Z",
    "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CNVD-2026-27673

CVE-2026-20191 (GCVE-0-2026-20191)

Tags

Sightings

Nomenclature