Vulnerability · Published Feb 25, 2026 · Assigned by cisco
CVE-2026-20037Cisco UCS Manager File Write Vulnerability
Medium 4.4
In plain English
A medium-severity security flaw in Cisco Unified Computing System (Managed) from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Unified Computing System (Managed) | 4.0(4c)4.0(2b)4.1(2a)4.0(1a)4.0(2a)4.0(1b)4.1(1c)4.0(4a) |
Weakness: CWE-250 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N