CVE-2025-20159

MediumCVSS 5.3/10Last modified Sep 26, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-284

Affected software

No affected versions have been published.

Timeline

Published
Sep 10, 2025
Last modified
Sep 26, 2026
NVD status
Deferred

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CVE-2025-20159: Medium severity, CVSS 5.3 | Vulnix