Vulnerability in Cisco NX-OS Software

[ Description ]Official description

A vulnerability in the Python interpreter of Cisco NX-OS Software could allow an authenticated, local attacker with low privileges to escape the Python sandbox and gain unauthorized access to the underlying operating system of an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by manipulating specific functions within the Python interpreter. A successful exploit could allow an attacker to escape the Python sandbox and execute arbitrary commands on the underlying operating system with the privileges of the authenticated user.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• NCSC-NL8 Oct 2026NCSC-2026-0406

  Vulnerabilities fixed in Cisco NX-OS Software Translated from Dutch

  Probability/damage M/HCVE-2026-20032CVE-2026-20173CVE-2026-76453+6 more CVEs
• BSI CERT-Bund7 Oct 2026WID-SEC-2026-3810

  Cisco Nexus and Cisco NX-OS: Multiple vulnerabilities Translated from German

  CVE-2026-76455CVE-2026-20038CVE-2026-76471+11 more CVEs

[ References ]References

• sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpp…