CyberCVE

CVE-2025-20159

Cisco IOS XR Software Management Interface ACL Bypass Vulnerability

Severity
Medium 5.3
CVSS 3.1
Exploited
Not listed
EPSS
0.003
21.6th percentile
Discovered by
Third party
Published by the vendor
Published
Sep 10, 2025
Assigned by cisco

Description

A vulnerability in the management interface access control list (ACL) processing feature in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass configured ACLs for the SSH, NetConf, and gRPC features. This vulnerability exists because management interface ACLs have not been supported on Cisco IOS XR Software Packet I/O infrastructure platforms for Linux-handled features such as SSH, NetConf, or gRPC. An attacker could exploit this vulnerability by attempting to send traffic to an affected device. A successful exploit could allow the attacker to bypass an ingress ACL that is applied on the management interface of the affected device.

Weakness: CWE-284

Affected products

Vendor Product Category Matched by
Cisco Cisco IOS XR Software Routing & Switching cna-assigner
Vendor-reported affected versions (1)
  • Cisco · Cisco IOS XR Software

References