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
| Link | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsgacl-pg6qfZk | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
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History
05 Aug 2025, 14:08
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:cisco:ios:15.2\(5a\)e:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(8\)e4:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(5c\)e:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-24p-4g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e0s:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-8fp-e-2g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-48ps-ll:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-16t-e-2g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e9:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e12:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(8\)e3:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-16fp-2g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-8t-2g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-8p-e-2g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-24t-4g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-48ts-ll:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-24fp-4g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(5b\)e:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-8ps-ll:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-24fp-4x-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-48pq-ll:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-48p-4g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000fe-24t-4g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-48fp-4g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-24ts-ll:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-16ps-ll:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e3:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(8\)e6:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000fe-48p-4g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-24pq-ll:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-8ts-ll:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e7:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-48t-4x-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e11:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-48tq-ll:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-16ts-ll:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-8t-e-2g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(8\)e1:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-24pp-4g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e1a:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7a\)e0b:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(8\)e5:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(6\)e2b:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000fe-48t-4g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e6:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e4:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-48pp-4g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e3k:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-48fp-4x-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-48t-4g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000fe-24p-4g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7b\)e0b:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(8\)e2:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-8fp-2g-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-24p-4x-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(6\)e0c:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-48p-4x-l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-24ps-ll:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(6\)e3:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-24t-4x-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(8\)e:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-16p-2g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e5:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-16t-2g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(6\)e1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e8:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e10:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_1000-8p-2g-l:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(6\)e:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(7\)e0a:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios:15.2\(6\)e2:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_2960l-24tq-ll:-:*:*:*:*:*:*:* |
|
| First Time |
Cisco catalyst 1000-24fp-4g-l
Cisco catalyst 2960l-24pq-ll Cisco catalyst 1000-48p-4x-l Cisco catalyst 1000-48t-4x-l Cisco catalyst 2960l-48tq-ll Cisco catalyst 1000-24p-4g-l Cisco catalyst 2960l-48ps-ll Cisco catalyst 2960l-16ts-ll Cisco catalyst 1000fe-48t-4g-l Cisco catalyst 1000-8p-e-2g-l Cisco catalyst 1000-24t-4x-l Cisco catalyst 1000-8t-2g-l Cisco catalyst 1000-24t-4g-l Cisco catalyst 1000fe-24p-4g-l Cisco catalyst 1000-48fp-4g-l Cisco catalyst 1000-16p-2g-l Cisco catalyst 1000-16fp-2g-l Cisco catalyst 2960l-16ps-ll Cisco catalyst 2960l-8ps-ll Cisco catalyst 1000-24fp-4x-l Cisco catalyst 1000-24p-4x-l Cisco Cisco catalyst 2960l-24tq-ll Cisco catalyst 1000-48pp-4g-l Cisco catalyst 2960l-8ts-ll Cisco catalyst 1000-16t-e-2g-l Cisco catalyst 1000-8t-e-2g-l Cisco ios Cisco catalyst 1000-8fp-2g-l Cisco catalyst 1000-48p-4g-l Cisco catalyst 1000fe-48p-4g-l Cisco catalyst 2960l-24ps-ll Cisco catalyst 2960l-48ts-ll Cisco catalyst 1000-16t-2g-l Cisco catalyst 1000-8fp-e-2g-l Cisco catalyst 2960l-24ts-ll Cisco catalyst 2960l-48pq-ll Cisco catalyst 1000-48fp-4x-l Cisco catalyst 1000-24pp-4g-l Cisco catalyst 1000-8p-2g-l Cisco catalyst 1000fe-24t-4g-l Cisco catalyst 1000-48t-4g-l |
|
| References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsgacl-pg6qfZk - Vendor Advisory |
08 May 2025, 14:39
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-05-07 18:15
Updated : 2025-08-05 14:08
NVD link : CVE-2025-20137
Mitre link : CVE-2025-20137
CVE.ORG link : CVE-2025-20137
JSON object : View
Products Affected
cisco
- catalyst_1000-16p-2g-l
- catalyst_1000fe-24t-4g-l
- catalyst_1000fe-48t-4g-l
- catalyst_1000-48p-4x-l
- catalyst_2960l-8ts-ll
- catalyst_1000-48p-4g-l
- catalyst_1000-24pp-4g-l
- catalyst_1000-24fp-4x-l
- catalyst_1000-48fp-4g-l
- catalyst_1000-48t-4g-l
- catalyst_1000-24fp-4g-l
- catalyst_1000-48pp-4g-l
- catalyst_1000-8fp-2g-l
- catalyst_2960l-16ts-ll
- catalyst_2960l-48ts-ll
- catalyst_2960l-24ps-ll
- catalyst_1000-8p-2g-l
- catalyst_1000-24p-4g-l
- ios
- catalyst_1000-16fp-2g-l
- catalyst_1000-8t-e-2g-l
- catalyst_2960l-24tq-ll
- catalyst_2960l-48ps-ll
- catalyst_2960l-48tq-ll
- catalyst_1000-24t-4x-l
- catalyst_2960l-24ts-ll
- catalyst_2960l-8ps-ll
- catalyst_1000-16t-e-2g-l
- catalyst_1000-24p-4x-l
- catalyst_1000-16t-2g-l
- catalyst_1000-8t-2g-l
- catalyst_1000fe-48p-4g-l
- catalyst_1000-8p-e-2g-l
- catalyst_1000-8fp-e-2g-l
- catalyst_1000-24t-4g-l
- catalyst_2960l-48pq-ll
- catalyst_2960l-24pq-ll
- catalyst_1000fe-24p-4g-l
- catalyst_2960l-16ps-ll
- catalyst_1000-48fp-4x-l
- catalyst_1000-48t-4x-l
CWE
CWE-284
Improper Access Control