CVE-2025-20145 Cisco IOS XR Software Access Control List Bypass Vulnerability

Medium 5.8 Published 12 Mar 2025 Updated 21 Mar 2025

Remote attackers can bypass egress access control lists on Cisco IOS XR devices by sending crafted traffic, requiring software upgrades to mitigate.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-20145?

CVE-2025-20145 is a medium-severity vulnerability in Cisco Ios Xr, published on 12 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-264

Which versions are affected by CVE-2025-20145?

It affects 1 product.

Products include Cisco Ios Xr.

How do I fix CVE-2025-20145?

No fix has been published for CVE-2025-20145 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-20145 being exploited?

There is no known exploitation of CVE-2025-20145 in the wild and no public exploit code.

All Cisco Ios Xr vulnerabilities

Sources

Also known as GHSA-cqp7-cmgp-m73g.