Vulnerability details
CVE-2026-76501
Cisco NX-OS Software
Cisco Nexus 9000 Series Switches SRv6 OAM (NGOAM) Remote Code Execution Vulnerability
CVSS 3.1
9.8Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (cisco) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Cisco | Cisco NX-OS Software | 10.3(1) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(2) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(3) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(3o) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(3p) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(3q) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(3r) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(3w) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(3x) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(4) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(4a) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(4g) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(4h) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(5) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(6) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(7) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(8) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(9) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(99w) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.3(99x) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.4(1) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.4(2) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.4(3) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.4(4) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.4(4g) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.4(5) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.4(6) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.4(7) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(1) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(2) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(3) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(3e) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(3o) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(3p) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(3s) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(3t) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(4) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.5(5) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.6(1) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.6(1s) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.6(2) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.6(2n) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.6(2s) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.6(3) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 10.6(3s) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(10) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(11) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(12) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(13) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(14) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(15) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(16) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(17) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(3) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(4) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(5) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(5w) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(6) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(7) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(7a) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(7k) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(8) | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco NX-OS Software | 9.3(9) | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-10-07
- Last updated
- 2026-10-08
- State
- Published
- Assigner (CNA)
- cisco
Exploit prediction (EPSS)
0.52%
Probability of exploitation in 30 days
44.5%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-121Stack-based Buffer Overflow