CVE-2026-20037 Cisco UCS Manager File Write Vulnerability
An authenticated local attacker with read-only privileges can escalate privileges to modify files and perform unauthorized actions on Cisco UCS Manager.
- 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-2026-20037?
CVE-2026-20037 is a medium-severity vulnerability in Cisco Unified Computing System (Managed), published on 25 Feb 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 NX-OS CLI privilege levels of Cisco UCS Manager Software could allow an authenticated, local attacker with read-only privileges to modify files and perform unauthorized actions on an affected system. This vulnerability exists because unnecessary privileges are given to the user. An attacker could exploit this vulnerability by authenticating to a device as a read-only user and connecting to the NX-OS CLI. A successful exploit could allow the attacker to create or overwrite files in the file system or perform limited privileged actions on an affected device.
Weakness: CWE-250
Which versions are affected by CVE-2026-20037?
How do I fix CVE-2026-20037?
No fix has been published for CVE-2026-20037 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-20037 being exploited?
There is no known exploitation of CVE-2026-20037 in the wild and no public exploit code.
Sources
Also known as GHSA-qwj7-2gpw-fvvg.