Cisco discloses critical flaws in IOS XR and Nexus 9000 switches

Cisco discloses critical flaws in IOS XR and Nexus 9000 switches

By MSSP Alert Team
Publication Date: 2026-09-08 13:58:00

Cisco has disclosed seven vulnerabilities impacting its networking operating system, IOS XR, with two rated as critical severity, according to a recent report by SDx Central.

The vulnerabilities, labeled CVE-2026-20274 through CVE-2026-20280, were discovered during an internal security review. The two critical flaws, CVE-2026-20274 and CVE-2026…