Mmastodon TechnologyCybersecurity first seen 1 d ago, last 1 d ago, peak #12

Critical Cisco NX-OS vulnerability CVE-2026-76486 disclosed

Original: 🔴 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.

Why now: A maximum-severity remotely exploitable flaw in widely deployed data centre switching software raises immediate patching concerns.

CiscoCVE-2026-76486NX-OSVXLAN NGOAM

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Evidence

• 🔴 CVE-2026-76486 - Critical (9.8) A vulnerability in the VXLAN Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software, known as NGOAM, could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a… · thehackerwire

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