CVE-2025-20317: Cisco Unified Computing System E-Series Software Ucse

High severity, CVSS 7.1. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability in the Virtual Keyboard Video Monitor (vKVM) connection handling of Cisco Integrated Management Controller (IMC) could allow an unauthenticated, remote attacker to redirect a user to a malicious website. This vulnerability is due to insufficient verification of vKVM endpoints. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to redirect a user to a malicious webpage and potentially capture user credentials. Note: The affected vKVM client is also included in Cisco UCS Manager.

Affected products

• Cisco Cisco Unified Computing System E-Series Software Ucse: version 3.2.7 only; version 3.2.6 only; version 3.2.4 only; version 3.2.10 only; version 3.2.2 only; version 3.2.3 only; …
• Cisco Cisco Unified Computing System Managed: version 4.0(1a) only; version 3.2(3n) only; version 4.1(1a) only; version 4.1(1b) only; version 4.0(4h) only; version 4.1(1c) only; …
• Cisco Cisco Unified Computing System Standalone: version 2.0(1a) only; version 4.0(2g) only; version 2.0(13f) only; version 3.0(4n) only; version 2.0(3e)1 only; version 3.0(3e) only; …

Published 2025-08-27. Last modified 2026-06-17.