CVE-2019-1880: Cisco Unified Computing System Server Firmware

Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability in the BIOS upgrade utility of Cisco Unified Computing System (UCS) C-Series Rack Servers could allow an authenticated, local attacker to install compromised BIOS firmware on an affected device. The vulnerability is due to insufficient validation of the firmware image file. An attacker could exploit this vulnerability by executing the BIOS upgrade utility with a specific set of options. A successful exploit could allow the attacker to bypass the firmware signature-verification process and install compromised BIOS firmware on an affected device.

Affected products

• Cisco Unified Computing System Server Firmware: before 4.0\(2g\) (fixed in 4.0\(2g\)); before 3.0\(4l\) (fixed in 3.0\(4l\)); from 4.0, before 4.0\(2g\) (fixed in 4.0\(2g\)); before 4.0\(4c\) (fixed in 4.0\(4c\))

Published 2019-06-05. Last modified 2026-06-17.