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- 1Cisco warns of critical unauthenticated root flaws in Nexus switchesโCisco October advisory: 18 CVEs, 7 critical, no workarounds for any of them. NX-OS NGOAM: CVE-2026-76485/76486/76501 โ a
Cisco's October security advisory covers 18 vulnerabilities, seven of them rated critical, with no workarounds available for any of them. The most severe issues in NX-OS โ CVE-2026-76485, CVE-2026-76486 and CVE-2026-76501 โ score 9.8 and allow unauthenticated root remote code execution via crafted IP packets on Nexus 3000 and 9000 switches, but only when NGOAM is enabled with SRv6 or NV Overlay. Administrators are urged to check exposure and patch promptly.
- 2Critical Cisco NX-OS vulnerability allows remote code executionโCVE-2026-76485: CRITICAL (CVSS 9.8) vulnerability in Cisco NX-OS NGOAM allows remote code execution or DoS via crafted p
A critical vulnerability, CVE-2026-76485, has been disclosed in Cisco NX-OS NGOAM, rated 9.8 on the CVSS scale. Attackers can send crafted packets to execute remote code or trigger denial-of-service conditions. Security researchers advise disabling NGOAM where it is not needed, as no official patch is available yet. Administrators of data centre and network infrastructure are urged to assess exposure and apply mitigations until Cisco releases a fix.
- 3Cisco fixes seven critical flaws in Nexus switchesโSeven critical CVEs across two product lines. None exploited yet. No workarounds exist. Here's the fast triage. NX-OS NG
Cisco's Nexus 3000 and 9000 series switches are affected by seven newly disclosed critical vulnerabilities across two product lines, including three CVSS 9.8 unauthenticated remote code execution flaws in NX-OS NGOAM (VXLAN OAM). None of the flaws have been exploited in the wild so far, and no workarounds are available, making prompt patching the only defence.
- 4Cisco patches critical 9.8 flaw in NX-OS softwareโ๐ด CVE-2026-76455 - Critical (9.8) As part of Cisco's ongoing commitment to proactive security and product quality, the C
Cisco has issued a security hardening release for its NX-OS networking software following an internal engineering review, addressing a newly disclosed vulnerability tracked as CVE-2026-76455. The flaw carries a critical severity score of 9.8 out of 10, making it one of the most serious ratings possible, and security teams are urged to update affected devices promptly.
- 5Cisco Patches High-Severity NX-OS Vulnerability CVE-2026-76453โ๐ CVE-2026-76453 - High (8.8) As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco
Cisco has disclosed CVE-2026-76453, a high-severity vulnerability rated 8.8, following an internal security review of its NX-OS networking software. The company released a software hardening update addressing the flaw and multiple other issues found during the review. Security teams are being urged to review the advisory and apply the patches to affected data center switches promptly.
- 6Critical Cisco NX-OS vulnerability CVE-2026-76486 disclosedโ๐ด CVE-2026-76486 - Critical (9.8) A vulnerability in the VXLAN Operation, Administration, and Maintenance (OAM) feature
A critical vulnerability, CVE-2026-76486 with a severity score of 9.8, has been disclosed in the VXLAN Operation, Administration, and Maintenance (NGOAM) feature of Cisco NX-OS Software. The flaw could allow an unauthenticated remote attacker to execute arbitrary code with root privileges or cause a denial of service. Security teams are urging administrators running NX-OS to review the advisory and patch affected devices quickly.