CVE-2026-20091
Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability
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.
Weakness: CWE-79
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Adaptive Security Appliance (ASA) | Firewall / NGFW | cna-assigner |
| Cisco | Cisco Firepower Extensible OS (FXOS) | Firewall / NGFW | cna-assigner |
| Cisco | Cisco Unified Computing System (UCS) | Other Products | cna-assigner |
Vendor-reported affected versions (3)
- Cisco · Cisco Firepower Extensible Operating System (FXOS)
- Cisco · Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
- Cisco · Cisco Unified Computing System (Managed)