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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco NX-OS Software

Default version status: unknown

9.2(3)affected
9.2(2v)affected
9.2(1)affected
9.2(2t)affected
9.2(3y)affected
9.3(2)affected
9.2(4)affected
9.3(1)affected
9.3(1z)affected
9.2(2)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)affected
10.5(3)affected
9.3(15)affected
10.4(4g)affected
10.5(4)affected
10.6(1)affected
10.5(3t)affected
10.3(8)affected
10.4(6)affected
10.5(3s)affected
10.5(3e)affected
10.5(3o)affected
9.3(16)affected
10.6(1s)affected
10.6(2)affected
10.5(3p)affected
10.3(9)affected
10.6(2s)affected
10.6(3)affected
10.4(7)affected
10.5(5)affected
9.3(17)affected
10.6(2n)affected
10.6(3s)affected

Cisco Cisco Unified Computing System (Managed)

Default version status: unknown

4.0(1a)affected
4.1(1d)affected
4.0(4f)affected
4.0(4a)affected
4.0(4e)affected
4.0(4c)affected
4.0(4h)affected
4.1(1c)affected
4.0(2a)affected
4.1(1e)affected
4.1(2a)affected
4.0(2b)affected
4.0(1b)affected
4.0(4d)affected
4.0(2e)affected
4.1(1a)affected
4.0(4g)affected
4.0(1c)affected
4.0(1d)affected
4.0(4b)affected
4.0(4i)affected
4.0(2d)affected
4.1(1b)affected
4.1(2b)affected
4.0(4k)affected
4.1(3a)affected
4.1(3b)affected
4.1(2c)affected
4.0(4l)affected
4.1(4a)affected
4.1(3c)affected
4.1(3d)affected
4.2(1c)affected
4.2(1d)affected
4.0(4m)affected
4.1(3e)affected
4.2(1f)affected
4.1(3f)affected
4.2(1i)affected
4.1(3h)affected
4.2(1k)affected
4.2(1l)affected
4.0(4n)affected
4.2(1m)affected
4.1(3i)affected
4.2(2a)affected
4.2(1n)affected
4.1(3j)affected
4.2(2c)affected
4.2(2d)affected
4.2(3b)affected
4.1(3k)affected
4.0(4o)affected
4.2(2e)affected
4.2(3d)affected
4.2(3e)affected
4.2(3g)affected
4.1(3l)affected
4.3(2b)affected
4.2(3h)affected
4.2(3i)affected
4.3(2c)affected
4.1(3m)affected
4.3(2e)affected
4.3(3a)affected
4.2(3j)affected
4.3(3c)affected
4.3(4a)affected
4.2(3k)affected
4.3(4b)affected
4.3(4c)affected
4.2(3l)affected
4.3(4d)affected
4.3(2f)affected
4.2(3m)affected
4.3(5a)affected
4.3(4e)affected
4.1(3n)affected
4.3(4f)affected
4.2(3n)affected
4.3(5c)affected
4.2(3o)affected
4.3(5d)affected
4.3(6a)affected
4.3(6b)affected
4.3(5e)affected
4.3(6c)affected
4.2(3p)affected
4.3(6d)affected
4.3(6e)affected
4.3(6f)affected
4.2(3r)affected
4.3(6g)affected
4.3(6h)affected
4.2(3s)affected
4.3(6i)affected

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-napi-rce-r2shwu2j ↗