What’s Vulnerable › Vulnerabilities
CVE-2025-20159: Cisco IOS XR Software Management Interface ACL Bypass Vulnerability
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-09-10 · updated 2026-09-26
- Weakness: CWE-284
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.
Affected products
- Cisco IOS XR Software: 6.6.1, 6.5.3, 7.0.1, 6.6.11, 6.5.1, 6.5.2 (+68)
References
Get alerted when CVE-2025-20159 or the next vulnerability affects your stack