cisco-sa-ucsciv-wGYtC78qMediumCVSS 6.7

Cisco FXOS and UCS Manager Software Command Injection Vulnerability

Published
February 25, 2026
Last Modified
February 25, 2026

🔗 CVE IDs covered (1)

CVE-2026-20099 →

📋 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.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is part of the February 2026 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: February 2026 Semiannual Cisco FXOS and NX-OS Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75740"].

CVE-2026-20099 — Cisco UCS Manager and FXOS Software Command Injection Vulnerability (CVSS 3.1 6.7, CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)

🎯 Affected products312

  • Cisco Firepower 2100 Series
  • Cisco Firepower 4100 Series
  • Cisco Firepower 9000 Series
  • Cisco Firepower Extensible Operating System (FXOS)
  • Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
  • Cisco Unified Computing System (Managed)
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.159
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.166
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.179
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.207
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.234
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.245
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.271
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.312
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.328
  • Cisco Firepower Extensible Operating System (FXOS) 2.10.1.341
  • Cisco Firepower Extensible Operating System (FXOS) 2.11.1.154
  • Cisco Firepower Extensible Operating System (FXOS) 2.11.1.182
  • Cisco Firepower Extensible Operating System (FXOS) 2.11.1.200
  • Cisco Firepower Extensible Operating System (FXOS) 2.11.1.205
  • Cisco Firepower Extensible Operating System (FXOS) 2.11.1.228
  • Cisco Firepower Extensible Operating System (FXOS) 2.11.1.236
  • Cisco Firepower Extensible Operating System (FXOS) 2.12.0.31
  • Cisco Firepower Extensible Operating System (FXOS) 2.12.0.432
  • Cisco Firepower Extensible Operating System (FXOS) 2.12.0.450
  • Cisco Firepower Extensible Operating System (FXOS) 2.12.0.467
  • Cisco Firepower Extensible Operating System (FXOS) 2.12.0.498
  • Cisco Firepower Extensible Operating System (FXOS) 2.12.1.29
  • Cisco Firepower Extensible Operating System (FXOS) 2.12.1.48
  • Cisco Firepower Extensible Operating System (FXOS) 2.12.1.72
  • +282 more not shown

✅ Remediation

Cisco has released software updates that address this vulnerability. https://software.cisco.com Workarounds: There are no workarounds that address this vulnerability.

🔗 References (6)