Security Advisory

CVE-2025-20159

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-09-10 16:06:49

Last updated 2025-09-10 18:20:28

Assigner cisco

State PUBLISHED

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.

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