CVE-2026-20032 Cisco NX-OS Software Python Sandbox Escape Vulnerability
An authenticated local attacker can escape the Python sandbox to execute arbitrary commands on the underlying operating system.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20032?
CVE-2026-20032 is a medium-severity code injection vulnerability in Cisco NX-OS Software, published on 7 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-653
Which versions are affected by CVE-2026-20032?
How do I fix CVE-2026-20032?
No fix has been published for CVE-2026-20032 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-20032 being exploited?
There is no known exploitation of CVE-2026-20032 in the wild and no public exploit code.
Sources
Also known as GHSA-w5w6-f4p9-3h6f.