Critical Cisco NX-OS Flaws Threaten Nexus Switches
Cisco patched five critical NX-OS flaws that let unauthenticated attackers hit Nexus 3000 and 9000 switches.
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Cisco Patches a Dozen Critical Vulnerabilities
Cisco patched 35 flaws, including more than a dozen critical bugs, and reports no known exploitation.
Cisco warns of critical flaws allowing Nexus switch takeover
Cisco disclosed five critical NX-OS flaws that can give root code execution on Nexus 3000 and 9000 switches.
Cisco security advisory (AV26-1020)
Canada’s Cyber Centre urged updates after Cisco advisories hit Nexus, Meraki, NX-OS, UCS, and contact-center products.
Critical Cisco Nexus Switch Vulnerabilities Allow Unauthenticated Attackers to Execute Code as Root
Cisco disclosed three critical unauthenticated root code-execution flaws in Nexus 3000 and 9000 switches.
Cisco NX-OS Software NX-API Remote Code Execution Vulnerability
Unauthenticated attackers can gain root code execution on Cisco NX-OS through crafted NX-API HTTP requests.
Cisco NX-OS Software Security Hardening Release: October 2026
Cisco issued an October 2026 NX-OS hardening release for internally found flaws not known to be exploited.
Cisco Advance Notification for Publication of October 7, 2026, Security Advisories
Cisco will publish October 7 security advisories and hardening fixes for NX-OS, Meraki, APIC, and related products.
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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