CVE-2023-20015: Cisco Firepower Extensible Operating System

Medium severity, CVSS 6.7. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability in the CLI of Cisco Firepower 4100 Series, Cisco Firepower 9300 Security Appliances, and Cisco UCS 6200, 6300, 6400, and 6500 Series Fabric Interconnects could allow an authenticated, local attacker to inject unauthorized commands. This vulnerability is due to insufficient input validation of commands supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute unauthorized commands within the CLI. An attacker with Administrator privileges could also execute arbitrary commands on the underlying operating system of Cisco UCS 6400 and 6500 Series Fabric Interconnects with root-level privileges.

Affected products

• Cisco Firepower Extensible Operating System: affected versions not specified
• Cisco Ucs 6200 Firmware: affected versions not specified
• Cisco Ucs 6248up Firmware: affected versions not specified
• Cisco Ucs 6296up Firmware: affected versions not specified
• Cisco Ucs 6300 Firmware: affected versions not specified
• Cisco Ucs 6324 Firmware: affected versions not specified
• Cisco Ucs 6332-16up Firmware: affected versions not specified
• Cisco Ucs 6332 Firmware: affected versions not specified
• Cisco Ucs 64108 Firmware: affected versions not specified
• Cisco Ucs 6454 Firmware: affected versions not specified
• Cisco Ucs 6536 Firmware: affected versions not specified
• Cisco Ucs Central Software: from 4.0, before 4.0\(4o\) (fixed in 4.0\(4o\)); from 4.1, before 4.1\(3k\) (fixed in 4.1\(3k\)); from 4.2, before 4.2\(2d\) (fixed in 4.2\(2d\))

Published 2023-02-23. Last modified 2026-06-17.