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Medium · 4.8 CVE-2026-20091 EUVD-2026-8670GHSA-4pqc-pmx6-jgc9

Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability

Published Feb 25, 2026 · Updated Feb 25, 2026 · Assigned by cisco

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. 

Affected products

VendorProductAffectedFixed
Cisco Cisco Firepower Extensible Operating System (FXOS) 2.14.1.131, 2.14.1.143, 2.14.1.163, 2.14.1.167, 2.16.0.128 —
Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.2, 9.12.1, 9.12.3, 9.12.4, 9.12.3.2, 9.12.3.12, 9.12.2.5, 9.12.1.2, 9.12.2.1, 9.12.3.7, 9.12.2.9, 9.12.3.9, 9.12.1.3, 9.12.4.2, 9.12.4.4, 9.12.4.7, 9.12.4.8, 9.12.4.10, 9.12.4.13, 9.12.4.18, 9.12.4.24, 9.16.1, 9.12.4.26, 9.16.1.28, 9.12.4.29, 9.16.2, 9.12.4.30, 9.16.2.3, 9.12.4.35, 9.16.2.7, 9… —
Cisco Cisco Unified Computing System (Managed) 4.0(4h), 4.1(1a), 4.0(1c), 4.0(4a), 4.0(1a), 4.0(1d), 4.1(1c), 4.0(2a), 4.0(4g), 4.0(2e), 4.0(4c), 4.0(4f), 4.0(1b), 4.0(2b), 4.0(2d), 4.1(1b), 4.0(4d), 4.0(4e), 4.0(4b), 4.1(2a), 4.1(1d), 4.0(4i), 4.1(1e), 4.1(2b), 4.0(4k), 4.1(3a), 4.1(3b), 4.1(2c), 4.0(4l), 4.1(4a), 4.1(3c), 4.1(3d), 4.2(1c), 4.… —

Advisories 1

References