CVE-2025-20137 (GCVE-0-2025-20137)
Vulnerability from cvelistv5
Published
2025-05-07 17:31
Modified
2025-05-07 19:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-284 - Improper Access Control
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | IOS |
Version: 15.2(5a)E Version: 15.2(5b)E Version: 15.2(5c)E Version: 15.2(6)E Version: 15.2(6)E1 Version: 15.2(6)E0c Version: 15.2(6)E2 Version: 15.2(7)E Version: 15.2(6)E2b Version: 15.2(7)E1 Version: 15.2(7)E0a Version: 15.2(7)E0s Version: 15.2(6)E3 Version: 15.2(7)E2 Version: 15.2(7a)E0b Version: 15.2(7)E3 Version: 15.2(7)E1a Version: 15.2(7b)E0b Version: 15.2(7)E4 Version: 15.2(7)E3k Version: 15.2(8)E Version: 15.2(8)E1 Version: 15.2(7)E5 Version: 15.2(7)E6 Version: 15.2(8)E2 Version: 15.2(7)E7 Version: 15.2(8)E3 Version: 15.2(7)E8 Version: 15.2(8)E4 Version: 15.2(7)E9 Version: 15.2(8)E5 Version: 15.2(8)E6 Version: 15.2(7)E10 Version: 15.2(7)E11 Version: 15.2(7)E12 |
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"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-20137\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-05-07T18:56:17.944241Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-05-07T18:56:19.336Z\"}}], \"cna\": {\"source\": {\"defects\": [\"CSCwm03838\"], \"advisory\": \"cisco-sa-ipsgacl-pg6qfZk\", \"discovery\": \"INTERNAL\"}, \"metrics\": [{\"format\": \"cvssV3_1\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 4.7, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"Cisco\", \"product\": \"IOS\", \"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\"}]}], \"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.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsgacl-pg6qfZk\", \"name\": \"cisco-sa-ipsgacl-pg6qfZk\"}], \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-284\", \"description\": \"Improper Access Control\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2025-05-07T17:31:45.590Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2025-20137\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-07T19:45:55.934Z\", \"dateReserved\": \"2024-10-10T19:15:13.213Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2025-05-07T17:31:45.590Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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