CVE-2026-76501 PUBLISHED

Cisco Nexus 9000 Series Switches SRv6 OAM (NGOAM) Remote Code Execution Vulnerability

Assigner: cisco
Reserved: 19.08.2026 Published: 07.10.2026 Updated: 08.10.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Product Status

Vendor Cisco
Product Cisco NX-OS Software
Versions Default: unknown
  • Version 9.3(3) is affected
  • Version 9.3(4) is affected
  • Version 9.3(5) is affected
  • Version 9.3(6) is affected
  • Version 9.3(5w) is affected
  • Version 9.3(7) is affected
  • Version 9.3(7k) is affected
  • Version 9.3(7a) is affected
  • Version 9.3(8) is affected
  • Version 9.3(9) is affected
  • Version 9.3(10) is affected
  • Version 10.3(1) is affected
  • Version 10.3(2) is affected
  • Version 9.3(11) is affected
  • Version 10.3(3) is affected
  • Version 9.3(12) is affected
  • Version 10.4(1) is affected
  • Version 10.3(99w) is affected
  • Version 10.3(3w) is affected
  • Version 10.3(99x) is affected
  • Version 10.3(3o) is affected
  • Version 10.3(4) is affected
  • Version 10.3(3p) is affected
  • Version 10.3(4a) is affected
  • Version 10.4(2) is affected
  • Version 10.3(3q) is affected
  • Version 9.3(13) is affected
  • Version 10.3(5) is affected
  • Version 10.4(3) is affected
  • Version 10.3(3x) is affected
  • Version 10.3(4g) is affected
  • Version 10.5(1) is affected
  • Version 10.3(3r) is affected
  • Version 10.3(6) is affected
  • Version 9.3(14) is affected
  • Version 10.4(4) is affected
  • Version 10.3(4h) is affected
  • Version 10.5(2) is affected
  • Version 10.3(7) is affected
  • Version 10.4(5) is affected
  • Version 10.5(3) is affected
  • Version 9.3(15) is affected
  • Version 10.4(4g) is affected
  • Version 10.5(4) is affected
  • Version 10.6(1) is affected
  • Version 10.5(3t) is affected
  • Version 10.3(8) is affected
  • Version 10.4(6) is affected
  • Version 10.5(3s) is affected
  • Version 10.5(3e) is affected
  • Version 10.5(3o) is affected
  • Version 9.3(16) is affected
  • Version 10.6(1s) is affected
  • Version 10.6(2) is affected
  • Version 10.5(3p) is affected
  • Version 10.3(9) is affected
  • Version 10.6(2s) is affected
  • Version 10.6(3) is affected
  • Version 10.4(7) is affected
  • Version 10.5(5) is affected
  • Version 9.3(17) is affected
  • Version 10.6(2n) is affected
  • Version 10.6(3s) is affected

Exploits

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

References

Problem Types

  • Stack-based Buffer Overflow cwe