Medium severity · published Aug 27, 2025
CVE-2025-20342
Cisco Integrated Management Controller Virtual Keyboard Video Monitor (vKVM) Stored Cross-Site Scripting Vulnerability
5.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
Cisco Unified Computing System (Managed) · Cisco
4.0(1a); 3.2(3n); 4.1(1a); 4.1(1b); 4.0(4h); 4.1(1c); +34 more · source: vendor
CU
Cisco Unified Computing System (Standalone) · Cisco
2.0(1a); 4.0(2g); 2.0(13f); 3.0(4n); 2.0(3e)1; 3.0(3e); +34 more · source: vendor
CU
Cisco Unified Computing System E-Series Software (UCSE) · Cisco
3.2.7; 3.2.6; 3.2.4; 3.2.10; 3.2.2; 3.2.3; +34 more · source: vendor
Affected product
CU
Cisco Unified Computing System (Managed)
Cisco
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