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.
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Product
Silicon One
- Mentions · 7d0
- Mentions · 30d0
- All mentions4
- First seenSep 2, 2026
- Last mentionedSep 4, 2026
Timeline
4 articles · newest firstCisco 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.
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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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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.
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Related CVEs
by mentions- CVE-2026-20212<1%9.8Unauthenticated RCE in Cisco Nexus 9000 Switches with Silicon One Integration
- CVE-2026-20279<1%9.8Critical Improper Access Control in Cisco IOS XR Software
- CVE-2026-20274<1%9.8Critical Improper Resource Control Flaws in Cisco IOS XR Software
Appears with
- Ciscovendor · 4
- Cisco Nexus 9000product · 2
- Ciscoorganization · 1
- Nexus 9000product · 1
- IOS XRproduct · 1
- NX-OSproduct · 1
- Nexus 9000 Series Switchesproduct · 1
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