Cisco Nexus 9000 Series Fabric Switches in ACI Mode Endpoint Group Contract Bypass Vulnerability
Cisco Nexus 9000 ACI switches allow unauthenticated bypass of EPG contracts via DHCP UDP ports.
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Stories tagged #nexus-9000
CVE-2026-20212: Cisco Nexus 9000 RCE Flaw
Cisco disclosed CVE-2026-20212, a critical unauthenticated remote code execution flaw in the Silicon One integration of Nexus 9000 switches.
Cisco searched for IOS XR bugs and found so many it rolled them into an update release
Cisco patched three critical flaws, including CVE-2026-20212 unauthenticated remote root code execution in Nexus 9000 switches; no exploitation observed yet.
Cisco Fixed Critical RCE in Nexus 9000 Series Switches
Cisco patched CVE-2026-20212 (CVSS 9.8) in Silicon One-based Nexus 9000 switches, allowing unauthenticated remote root code execution via TCP ports 43210/43211.
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Critical Cisco Nexus 9000 Flaw Lets Unauthenticated Remote Attackers Run Code as Root
Cisco patches critical CVE-2026-20212 (CVSS 9.8) in Nexus 9000 switches allowing unauthenticated remote root code execution, plus IOS XR hardening release.
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Cisco security advisory (AV26-876)
Canada's Cyber Centre relayed Cisco advisories covering a Nexus 9000 Silicon One RCE, IOS XR hardening, and denial-of-service flaws across IP phone lines.
Cisco Advance Notification for Publication of September 2, 2026, Security Advisories
Cisco PSIRT published September 2, 2026 advisories including critical IOS XR hardening fixes and a Nexus 9000 remote code execution flaw.
Cisco Nexus 9000 Series Switches Silicon One Remote Code Execution Vulnerability
Cisco patches unauthenticated RCE in Nexus 9000 Silicon One switches exposed via TCP ports 43210 and 43211 in the default L3 VRF.