CVE-2026-76471
Cisco NX-OS Software NX-API Remote Code Execution Vulnerability
Description
A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of data that is sent to the NX-API. An attacker could exploit this vulnerability by sending a crafted HTTP request to the NX-API of an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes, which could result in a reload of the device and a DoS condition.
Weakness: CWE-122
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco NX-OS Software | Routing & Switching | cna-assigner |
| Cisco | Cisco Unified Computing System (UCS) | Other Products | cna-assigner |
Vendor-reported products (2)
- Cisco · Cisco NX-OS Software
- Cisco · Cisco Unified Computing System (Managed)
Vendor advisory
Cisco NX-OS Software NX-API Remote Code Execution Vulnerability
Cisco’s rating: Critical (advisory CVSS 9.8) · Published Oct 7, 2026
Bug IDs: CSCwu46199 , CSCwu58579
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from