CVE-2026-20099

Cisco UCS Manager and FXOS Software Command Injection Vulnerability

Published Feb 25, 2026 CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Description
A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco&nbsp;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&nbsp;root.&nbsp;

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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Cisco
Cisco cisco:adaptive Security Appliance Software
Cisco firepower Extensible Operating System
Cisco unified Computing System Manager
Vendors & Products Cisco
Cisco cisco:adaptive Security Appliance Software
Cisco firepower Extensible Operating System
Cisco unified Computing System Manager
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco&nbsp;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&nbsp;root.&nbsp; 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.
Title Cisco UCS Manager and FXOS Software Command Injection Vulnerability
Weaknesses CWE-78
References
Metrics cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cisco
Published
Updated
Feb 26, 2026, 2:44 PM
Reserved
Oct 8, 2025, 11:59 AM
Status
Deferred
Published
Feb 25, 2026, 5:25 PM
Modified
Jun 17, 2026, 10:17 AM