CVE-2026-76501: Cisco Nexus 9000 Series Switches SRv6 OAM (NGOAM) Remote Code Execution Vulnerability
A vulnerability in the Segment Routing over IPv6 (SRv6) 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 and SRv6 features are 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 issue?
Affected Cisco Nexus 9000 Series switches running Cisco NX-OS Software are exposed when both the NGOAM and SRv6 features are enabled. The vulnerable traffic can be sent to an IP interface on the device.
Does an attacker need credentials or user interaction to exploit it?
No. Exploitation is described as unauthenticated and remote, and it requires only that an attacker send crafted packets to an IP interface on an affected device.
Are default configurations affected?
The issue requires both NGOAM and SRv6 to be enabled. The provided information does not state whether either feature is enabled by default.
What is the impact of successful exploitation?
An attacker could execute arbitrary code with root privileges. Crafted traffic may also crash processes, causing a device reload and denial of service.