CVE-2025-20144

Description

A vulnerability in the hybrid access control list (ACL) processing of IPv4 packets in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect handling of packets when a specific configuration of the hybrid ACL exists. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass a configured ACL on the affected device. For more information, see the section of this advisory. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.

Reserved 2024-10-10 | Published 2025-03-12 | Updated 2025-03-12 | Assigner cisco

Problem types

Improper Access Control

Product status

Default status
unknown

6.5.3
affected

6.5.2
affected

6.5.92
affected

6.5.1
affected

6.6.2
affected

7.0.1
affected

6.6.25
affected

6.6.1
affected

6.5.93
affected

7.1.1
affected

7.0.90
affected

6.6.3
affected

7.0.2
affected

7.2.1
affected

7.1.2
affected

6.6.4
affected

7.3.1
affected

7.4.1
affected

7.2.2
affected

7.3.2
affected

7.5.1
affected

7.6.1
affected

7.5.2
affected

7.7.1
affected

7.3.3
affected

7.4.2
affected

7.3.4
affected

7.6.2
affected

7.8.1
affected

7.5.3
affected

7.7.2
affected

7.9.1
affected

7.8.2
affected

7.5.4
affected

7.8.22
affected

7.10.1
affected

7.7.21
affected

7.9.2
affected

7.3.5
affected

7.5.5
affected

7.11.1
affected

7.10.2
affected

7.3.6
affected

References

sec.cloudapps.cisco.com/...y/cisco-sa-ncs-hybridacl-crMZFfKQ (cisco-sa-ncs-hybridacl-crMZFfKQ)

blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/ (Crafting endless AS-PATHS in BGP)

cve.org (CVE-2025-20144)

nvd.nist.gov (CVE-2025-20144)

Download JSON