Product:
Cisco IOS XR Software
Summary
A vulnerability in the management interface access control list processing feature in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass configured ACLs for 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. An attacker could exploit this vulnerability by sending traffic to an affected device.
Details
| Severity | Base Score | CVE |
|---|---|---|
| MEDIUM | 5.3 | CVE-2025-20159 |
Exploitation
An attacker can exploit this vulnerability by attempting to send traffic to an affected device. If successful, the attacker could bypass an ingress ACL that is applied on the management interface, allowing unauthorized access to the management features of the device.
Affected Products
- Cisco IOS XR Software: Vulnerable due to lack of support for management interface ACLs on Packet I/O infrastructure.
Mitigation
To mitigate this vulnerability, it is recommended to implement additional security measures such as restricting access to the management interface and monitoring traffic for unauthorized attempts. Regular updates and patches from Cisco should also be applied to ensure the latest security features are in place.