CVE-2025-20159
Cisco IOS XR Software Management Interface ACL Bypass Vulnerability
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 products (1)
- Cisco · Cisco IOS XR Software
Vendor advisory
cisco-sa-acl-packetio-Swjhhbtz
Cisco IOS XR Software Management Interface ACL Bypass Vulnerability
Cisco’s rating: Medium (advisory CVSS 5.3) · Published Sep 10, 2025
Bug IDs: CSCwb70861 , CSCwo51041 , CSCwo52518 , CSCwq48170
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from