Vulnerability-Lookup

CNVD-2025-15478

Vulnerability from cnvd - Published: 2025-07-11

Title

Cisco IOS访问控制错误漏洞（CNVD-2025-15478）

Description

Cisco IOS是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS存在访问控制错误漏洞，该漏洞源于访问控制列表配置不当，攻击者可利用该漏洞导致绕过ACL限制。

Severity

低

Patch Name

Cisco IOS访问控制错误漏洞（CNVD-2025-15478）的补丁

Patch Description

Cisco IOS是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS存在访问控制错误漏洞，该漏洞源于访问控制列表配置不当，攻击者可利用该漏洞导致绕过ACL限制。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://www.cisco.com/c/en/us/support/index.html

Reference

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsgacl-pg6qfZk

Impacted products

Name
Cisco Cisco IOS

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-20137",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-20137"
    }
  },
  "description": "Cisco IOS\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u5957\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco IOS\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8bbf\u95ee\u63a7\u5236\u5217\u8868\u914d\u7f6e\u4e0d\u5f53\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7ed5\u8fc7ACL\u9650\u5236\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://www.cisco.com/c/en/us/support/index.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-15478",
  "openTime": "2025-07-11",
  "patchDescription": "Cisco IOS\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u5957\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco IOS\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8bbf\u95ee\u63a7\u5236\u5217\u8868\u914d\u7f6e\u4e0d\u5f53\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7ed5\u8fc7ACL\u9650\u5236\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 IOS\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2025-15478\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Cisco IOS"
  },
  "referenceLink": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsgacl-pg6qfZk",
  "serverity": "\u4f4e",
  "submitTime": "2025-05-14",
  "title": "Cisco IOS\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2025-15478\uff09"
}

CVE-2025-20137 (GCVE-0-2025-20137)

Vulnerability from cvelistv5 – Published: 2025-05-07 17:31 – Updated: 2025-05-07 19:45

Summary

A vulnerability in the access control list (ACL) programming of Cisco IOS Software that is running on Cisco Catalyst 1000 Switches and Cisco Catalyst 2960L Switches could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to the use of both an IPv4 ACL and a dynamic ACL of IP Source Guard on the same interface, which is an unsupported configuration. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device. Note: Cisco documentation has been updated to reflect that this is an unsupported configuration. However, Cisco is publishing this advisory because the device will not prevent an administrator from configuring both features on the same interface. There are no plans to implement the ability to configure both features on the same interface on Cisco Catalyst 1000 or Catalyst 2960L Switches.

Severity

4.7 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-07 18:56 UTC

CWE

CWE-284 - Improper Access Control

Assigner

cisco mitre root

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version
Cisco	IOS	Affected: 15.2(5a)E Affected: 15.2(5b)E Affected: 15.2(5c)E Affected: 15.2(6)E Affected: 15.2(6)E1 Affected: 15.2(6)E0c Affected: 15.2(6)E2 Affected: 15.2(7)E Affected: 15.2(6)E2b Affected: 15.2(7)E1 Affected: 15.2(7)E0a Affected: 15.2(7)E0s Affected: 15.2(6)E3 Affected: 15.2(7)E2 Affected: 15.2(7a)E0b Affected: 15.2(7)E3 Affected: 15.2(7)E1a Affected: 15.2(7b)E0b Affected: 15.2(7)E4 Affected: 15.2(7)E3k Affected: 15.2(8)E Affected: 15.2(8)E1 Affected: 15.2(7)E5 Affected: 15.2(7)E6 Affected: 15.2(8)E2 Affected: 15.2(7)E7 Affected: 15.2(8)E3 Affected: 15.2(7)E8 Affected: 15.2(8)E4 Affected: 15.2(7)E9 Affected: 15.2(8)E5 Affected: 15.2(8)E6 Affected: 15.2(7)E10 Affected: 15.2(7)E11 Affected: 15.2(7)E12

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-20137",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-07T18:56:17.944241Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-07T19:45:55.934Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "IOS",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "15.2(5a)E"
            },
            {
              "status": "affected",
              "version": "15.2(5b)E"
            },
            {
              "status": "affected",
              "version": "15.2(5c)E"
            },
            {
              "status": "affected",
              "version": "15.2(6)E"
            },
            {
              "status": "affected",
              "version": "15.2(6)E1"
            },
            {
              "status": "affected",
              "version": "15.2(6)E0c"
            },
            {
              "status": "affected",
              "version": "15.2(6)E2"
            },
            {
              "status": "affected",
              "version": "15.2(7)E"
            },
            {
              "status": "affected",
              "version": "15.2(6)E2b"
            },
            {
              "status": "affected",
              "version": "15.2(7)E1"
            },
            {
              "status": "affected",
              "version": "15.2(7)E0a"
            },
            {
              "status": "affected",
              "version": "15.2(7)E0s"
            },
            {
              "status": "affected",
              "version": "15.2(6)E3"
            },
            {
              "status": "affected",
              "version": "15.2(7)E2"
            },
            {
              "status": "affected",
              "version": "15.2(7a)E0b"
            },
            {
              "status": "affected",
              "version": "15.2(7)E3"
            },
            {
              "status": "affected",
              "version": "15.2(7)E1a"
            },
            {
              "status": "affected",
              "version": "15.2(7b)E0b"
            },
            {
              "status": "affected",
              "version": "15.2(7)E4"
            },
            {
              "status": "affected",
              "version": "15.2(7)E3k"
            },
            {
              "status": "affected",
              "version": "15.2(8)E"
            },
            {
              "status": "affected",
              "version": "15.2(8)E1"
            },
            {
              "status": "affected",
              "version": "15.2(7)E5"
            },
            {
              "status": "affected",
              "version": "15.2(7)E6"
            },
            {
              "status": "affected",
              "version": "15.2(8)E2"
            },
            {
              "status": "affected",
              "version": "15.2(7)E7"
            },
            {
              "status": "affected",
              "version": "15.2(8)E3"
            },
            {
              "status": "affected",
              "version": "15.2(7)E8"
            },
            {
              "status": "affected",
              "version": "15.2(8)E4"
            },
            {
              "status": "affected",
              "version": "15.2(7)E9"
            },
            {
              "status": "affected",
              "version": "15.2(8)E5"
            },
            {
              "status": "affected",
              "version": "15.2(8)E6"
            },
            {
              "status": "affected",
              "version": "15.2(7)E10"
            },
            {
              "status": "affected",
              "version": "15.2(7)E11"
            },
            {
              "status": "affected",
              "version": "15.2(7)E12"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the access control list (ACL) programming of Cisco IOS Software that is running on Cisco Catalyst 1000 Switches and Cisco Catalyst 2960L Switches could allow an unauthenticated, remote attacker to bypass a configured ACL.\r\n\r This vulnerability is due to the use of both an IPv4 ACL and a dynamic ACL of IP Source Guard on the same interface, which is an unsupported configuration. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.\r\n\r Note: Cisco documentation has been updated to reflect that this is an unsupported configuration. However, Cisco is publishing this advisory because the device will not prevent an administrator from configuring both features on the same interface. There are no plans to implement the ability to configure both features on the same interface on Cisco Catalyst 1000 or Catalyst 2960L Switches."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "Improper Access Control",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-07T17:31:45.590Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-ipsgacl-pg6qfZk",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsgacl-pg6qfZk"
        }
      ],
      "source": {
        "advisory": "cisco-sa-ipsgacl-pg6qfZk",
        "defects": [
          "CSCwm03838"
        ],
        "discovery": "INTERNAL"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2025-20137",
    "datePublished": "2025-05-07T17:31:45.590Z",
    "dateReserved": "2024-10-10T19:15:13.213Z",
    "dateUpdated": "2025-05-07T19:45:55.934Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.