Description

A vulnerability in the access control list (ACL) processing in the egress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability exists because certain packets are handled incorrectly when they are received on an ingress interface on one line card and destined out of an egress interface on another line card where the egress ACL is configured. 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 egress ACL on the affected device. For more information about this vulnerability, see the section of this advisory. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

INFO

Published Date :

2025-03-12T16:12:48.668Z

Last Modified :

2025-03-21T20:32:32.526Z

Source :

cisco
AFFECTED PRODUCTS

The following products are affected by CVE-2025-20145 vulnerability.

Vendors Products
Cisco
  • 8608
  • 8804
  • 8808
  • 8812
  • 8818
  • Ios Xr
  • Ios Xr Software
  • Ncs 5504
  • Ncs 5508
  • Ncs 5516
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-20145.

URL Resource
https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/ cve-icon cve-icon
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-modular-ACL-u5MEPXMm cve-icon cve-icon
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