CVE-2026-76501
Cisco Nexus 9000 Series Switches SRv6 OAM (NGOAM) Remote Code Execution Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- cisco
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.52% · top 55% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
- affected 9.3(3)
- affected 9.3(4)
- affected 9.3(5)
- affected 9.3(6)
- affected 9.3(5w)
- affected 9.3(7)
- affected 9.3(7k)
- affected 9.3(7a)
- affected 9.3(8)
- affected 9.3(9)
- affected 9.3(10)
- affected 10.3(1)
- affected 10.3(2)
- affected 9.3(11)
- affected 10.3(3)
- affected 9.3(12)
- affected 10.4(1)
- affected 10.3(99w)
- affected 10.3(3w)
- affected 10.3(99x)
- affected 10.3(3o)
- affected 10.3(4)
- affected 10.3(3p)
- affected 10.3(4a)
- affected 10.4(2)
- affected 10.3(3q)
- affected 9.3(13)
- affected 10.3(5)
- affected 10.4(3)
- affected 10.3(3x)
- affected 10.3(4g)
- affected 10.5(1)
- affected 10.3(3r)
- affected 10.3(6)
- affected 9.3(14)
- affected 10.4(4)
- affected 10.3(4h)
- affected 10.5(2)
- affected 10.3(7)
- affected 10.4(5)
- and 23 more
What to do
Exploitation: 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 (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-76501)Record last updated .