🔐 CVE Alert

CVE-2026-76471

CRITICAL 9.8

Cisco NX-OS Software NX-API Remote Code Execution Vulnerability

CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-122
Vendor cisco
Product cisco nx-os software
Ecosystems
Industries
NetworkingTelecommunications
Published Oct 7, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Affected Versions

Cisco / Cisco NX-OS Software
9.2(3) 9.2(2v) 9.2(1) 9.2(2t) 9.2(3y) 9.3(2) 9.2(4) 9.3(1) 9.3(1z) 9.2(2) 9.3(3) 9.3(4) 9.3(5) 9.3(6) 9.3(5w) 9.3(7) 9.3(7k) 9.3(7a) 9.3(8) 9.3(9) 9.3(10) 10.3(1) 10.3(2) 9.3(11) 10.3(3) 9.3(12) 10.4(1) 10.3(99w) 10.3(3w) 10.3(99x) 10.3(3o) 10.3(4) 10.3(3p) 10.3(4a) 10.4(2) 10.3(3q) 9.3(13) 10.3(5) 10.4(3) 10.3(3x) 10.3(4g) 10.5(1) 10.3(3r) 10.3(6) 9.3(14) 10.4(4) 10.3(4h) 10.5(2) 10.3(7) 10.4(5) 10.5(3) 9.3(15) 10.4(4g) 10.5(4) 10.6(1) 10.5(3t) 10.3(8) 10.4(6) 10.5(3s) 10.5(3e) 10.5(3o) 9.3(16) 10.6(1s) 10.6(2) 10.5(3p) 10.3(9) 10.6(2s) 10.6(3) 10.4(7) 10.5(5) 9.3(17) 10.6(2n) 10.6(3s)
Cisco / Cisco Unified Computing System (Managed)
4.0(1a) 4.1(1d) 4.0(4f) 4.0(4a) 4.0(4e) 4.0(4c) 4.0(4h) 4.1(1c) 4.0(2a) 4.1(1e) 4.1(2a) 4.0(2b) 4.0(1b) 4.0(4d) 4.0(2e) 4.1(1a) 4.0(4g) 4.0(1c) 4.0(1d) 4.0(4b) 4.0(4i) 4.0(2d) 4.1(1b) 4.1(2b) 4.0(4k) 4.1(3a) 4.1(3b) 4.1(2c) 4.0(4l) 4.1(4a) 4.1(3c) 4.1(3d) 4.2(1c) 4.2(1d) 4.0(4m) 4.1(3e) 4.2(1f) 4.1(3f) 4.2(1i) 4.1(3h) 4.2(1k) 4.2(1l) 4.0(4n) 4.2(1m) 4.1(3i) 4.2(2a) 4.2(1n) 4.1(3j) 4.2(2c) 4.2(2d) 4.2(3b) 4.1(3k) 4.0(4o) 4.2(2e) 4.2(3d) 4.2(3e) 4.2(3g) 4.1(3l) 4.3(2b) 4.2(3h) 4.2(3i) 4.3(2c) 4.1(3m) 4.3(2e) 4.3(3a) 4.2(3j) 4.3(3c) 4.3(4a) 4.2(3k) 4.3(4b) 4.3(4c) 4.2(3l) 4.3(4d) 4.3(2f) 4.2(3m) 4.3(5a) 4.3(4e) 4.1(3n) 4.3(4f) 4.2(3n) 4.3(5c) 4.2(3o) 4.3(5d) 4.3(6a) 4.3(6b) 4.3(5e) 4.3(6c) 4.2(3p) 4.3(6d) 4.3(6e) 4.3(6f) 4.2(3r) 4.3(6g) 4.3(6h) 4.2(3s) 4.3(6i)

References

NVD ↗ CVE.org ↗ EPSS Data ↗
sec.cloudapps.cisco.com: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-napi-rce-r2shwu2j