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.

INFO

Published Date :

2025-09-10T16:06:49.862Z

Last Modified :

2025-09-10T18:20:28.931Z

Source :

cisco
AFFECTED PRODUCTS

The following products are affected by CVE-2025-20159 vulnerability.

Vendors Products
Cisco
  • Ios Xr Software
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-20159.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-acl-packetio-Swjhhbtz cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
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Scope
Confidentiality Impact
Integrity Impact
Availability Impact