A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious data into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid credentials for a user account with the role of Administrator or AAA Administrator. 

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Cisco
  • Cisco:adaptive Security Appliance Software
  • Firepower Extensible Operating System
  • Unified Computing System Manager

No data.

No data.

References
Link Providers
https://www.spirityenterprise.com/pentest spirity
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsfxosxss-7skVE8Zv cve-icon cve-icon
History

Fri, 27 Feb 2026 03:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Thu, 26 Feb 2026 13:30:00 +0000

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

Wed, 25 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Description A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious data into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid credentials for a user account with the role of Administrator or AAA Administrator. 
Title Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-02-25T19:05:48.712Z

Reserved: 2025-10-08T11:59:15.368Z

Link: CVE-2026-20091

cve-icon Vulnrichment

Updated: 2026-02-25T18:17:47.436Z

cve-icon NVD

Status : Received

Published: 2026-02-25T17:25:26.830

Modified: 2026-02-25T17:25:26.830

Link: CVE-2026-20091

cve-icon Redhat

No data.