CVE-2026-76486: Cisco Nexus 3000 and 9000 Series Switches VXLAN OAM (NGOAM) Remote Code Execution Vulnerability
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 Software
Event History
Frequently Asked Questions
Which deployments are exposed?
Cisco Nexus 3000 and 9000 Series switches running Cisco NX-OS Software are exposed when the VXLAN OAM feature, also known as NGOAM, is enabled.
What does an attacker need to exploit this issue?
An attacker does not need authentication or user interaction. They need to send crafted IP packets to an IP interface on an affected device.
What is the potential impact of successful exploitation?
Successful exploitation can provide arbitrary code execution with root privileges. It can also crash processes, causing a device reload and denial of service.