CVE-2026-20099: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Cisco Cisco Firepower Extensible Operating System (FXOS)
A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is due to insufficient input validation of command arguments 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 arbitrary commands on the underlying operating system of the affected device with root-level privileges.
CVE-2026-20099: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Cisco Cisco Firepower Extensible Operating System (FXOS)
Description
A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is due to insufficient input validation of command arguments 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 arbitrary commands on the underlying operating system of the affected device with root-level privileges.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2025-10-08T11:59:15.370Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6b6fb7ef31ef0b55569b
Added to database: 2/25/2026, 9:36:47 PM
Last updated: 2/26/2026, 6:55:56 AM
Views: 2
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