Cisco IOS XR ACL Bypass via Ingress/Egress Misrouting
CVE-2025-20145 Published on March 12, 2025
Cisco IOS XR Software Access Control List Bypass Vulnerability
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.
Vulnerability Analysis
CVE-2025-20145 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
Permissions, Privileges, and Access Controls
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.
Products Associated with CVE-2025-20145
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Affected Versions
Cisco IOS XR Software:- Version 6.5.3 is affected.
- Version 6.5.2 is affected.
- Version 6.5.92 is affected.
- Version 6.5.1 is affected.
- Version 6.6.2 is affected.
- Version 7.0.1 is affected.
- Version 6.6.25 is affected.
- Version 6.6.1 is affected.
- Version 6.5.93 is affected.
- Version 7.1.1 is affected.
- Version 7.0.90 is affected.
- Version 6.6.3 is affected.
- Version 7.0.2 is affected.
- Version 7.2.1 is affected.
- Version 7.1.2 is affected.
- Version 7.0.11 is affected.
- Version 7.0.12 is affected.
- Version 7.0.14 is affected.
- Version 6.6.4 is affected.
- Version 7.2.12 is affected.
- Version 7.3.1 is affected.
- Version 7.4.1 is affected.
- Version 7.2.2 is affected.
- Version 7.3.15 is affected.
- Version 7.3.16 is affected.
- Version 7.3.2 is affected.
- Version 7.5.1 is affected.
- Version 7.6.1 is affected.
- Version 7.5.2 is affected.
- Version 7.8.1 is affected.
- Version 7.5.12 is affected.
- Version 7.7.1 is affected.
- Version 7.3.3 is affected.
- Version 7.4.2 is affected.
- Version 7.3.4 is affected.
- Version 7.6.2 is affected.
- Version 7.5.3 is affected.
- Version 7.7.2 is affected.
- Version 7.9.1 is affected.
- Version 7.10.1 is affected.
- Version 7.8.2 is affected.
- Version 7.5.4 is affected.
- Version 7.8.22 is affected.
- Version 7.7.21 is affected.
- Version 7.9.2 is affected.
- Version 7.3.5 is affected.
- Version 7.5.5 is affected.
- Version 7.11.1 is affected.
- Version 7.10.2 is affected.
- Version 24.1.1 is affected.
- Version 7.3.6 is affected.
- Version 7.11.2 is affected.
- Version 24.2.1 is affected.
- Version 24.1.2 is affected.
- Version 24.2.11 is affected.
- Version 24.3.1 is affected.
- Version 24.4.1 is affected.
- Version 24.2.2 is affected.
- Version 7.11.21 is affected.
- Version 24.2.20 is affected.
- Version 24.3.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.