🛡️ CVE-2025-20144
🟡 CVSS 4.0 — Medium ✅ No Known Exploit CWE-284 NVD
4.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 4.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE CWE-284
Public Exploit ✅ No
Source NVD
Published 2025-03-12
Updated 2026-06-02
Modified 2025-08-04
Fix URL N/A

Affected Packages

Software From version Fixed in
ios-xr

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