Cisco Patches Critical IOS XR and Nexus Flaws

Cisco patched eight IOS XR vulnerabilities, including critical CVE-2026-20274 and CVE-2026-20279, both rated 9.8. A third critical flaw, CVE-2026-20212, affects 10 Silicon One-based Nexus 9000 switches, allowing unauthenticated remote code execution as root via TCP ports 43210 and 43211. No malicious use has been reported.