CVE-2025-20342
Cisco Integrated Management Controller Virtual Keyboard Video Monitor (vKVM) Stored Cross-Site Scripting Vulnerability
Description
A vulnerability in the Virtual Keyboard Video Monitor (vKVM) connection handling of Cisco Integrated Management Controller (IMC) could allow an authenticated, remote attacker with low privileges 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 code into a specific data field in 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 user credentials with privileges that allow for vKVM access on the affected device. Note: The affected vKVM client is also included in Cisco UCS Manager.
Weakness: CWE-80
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Unified Computing System (UCS) | Other Products | cna-assigner |
Vendor-reported products (3)
- Cisco · Cisco Unified Computing System (Managed)
- Cisco · Cisco Unified Computing System (Standalone)
- Cisco · Cisco Unified Computing System E-Series Software (UCSE)
Vendor advisory
Cisco Integrated Management Controller Virtual Keyboard Video Monitor Stored Cross-Site Scripting Vulnerability
Cisco’s rating: Medium (advisory CVSS 5.4) · Published Aug 27, 2025
Bug IDs: CSCwm57433 , CSCwn43958 , CSCwo77420 , CSCwq34766
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from