CVE-2026-76485: 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 devices are exposed to this vulnerability?
Cisco Nexus 3000 and 9000 Series switches running affected Cisco NX-OS Software are exposed when the VXLAN OAM feature, also known as NGOAM, is enabled.
What must an attacker do to exploit the issue?
An unauthenticated remote attacker only needs to send crafted IP packets to an IP interface on an affected device. No credentials or user interaction are required.
What is the potential impact of a successful attack?
A successful exploit can allow arbitrary code execution with root privileges. It can also crash processes, causing the device to reload and resulting in a denial of service.