CVE-2026-76485: Cisco NX-OS Software

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

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 Denial-of-Service (DoS) on an affected device. This vulnerability is due to improper input validation of IP traffic when the NGOAM feature is enabled. An attacker could exploit this vulnerability by sending crafted packets to an IP interface on an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes resulting in a reload and DoS condition.

Affected products

• Cisco Cisco NX-OS Software: version 9.2(3) only; version 9.2(2v) only; version 9.2(1) only; version 9.2(2t) only; version 9.2(3y) only; version 9.3(2) only; …

Published 2026-10-07. Last modified 2026-10-08.