CVE-2024-20322

MEDIUM

Cisco IOS XR - Unauthenticated ACL Bypass via Pseudowire Interface

Title source: llm
STIX 2.1

Description

A vulnerability in the access control list (ACL) processing on Pseudowire interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access resources behind the affected device that were supposed to be protected by a configured ACL.

Scores

CVSS v3 5.8
EPSS 0.0005
EPSS Percentile 15.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-284
Status published
Products (2)
cisco/ios_xr 7.10.2
cisco/ios_xr 7.11
Published Mar 13, 2024
Tracked Since Feb 18, 2026