#VU114565 Stored cross-site scripting in Cisco Systems, Inc products - CVE-2025-20342

Vulnerability identifier: #VU114565

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear

CVE-ID: CVE-2025-20342

CWE-ID: CWE-79

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Cisco Integrated Management Controller
Catalyst 8300 Series Edge Universal CPE
Cisco UCS Manager
UCS B-Series Blade Servers
UCS X-Series Modular System
UCS C-Series M6 Rack Servers
UCS C-Series M7 Rack Servers
UCS C-Series M8 Rack Servers
UCS E-Series Servers M6
Cisco Intersight Server
Enterprise NFV Infrastructure Software

Software vendor:
Cisco Systems, Inc

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the Virtual Keyboard Video Monitor (vKVM) connection handling. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Install updates from vendor's website.

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucs-kvmsxss-6h7AnUyk