CVE-2026-20198: Cisco Enterprise Nfv Infrastructure Software

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the browser of the targeted user or access sensitive, browser-based information.

Affected products

• Cisco Cisco Enterprise Nfv Infrastructure Software: version 4.1.1 only; version 3.9.1 only; version 3.5.2 only; version 3.12.2 only; version 3.6.2 only; version 3.9.2 only; …
• 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 Standalone: version 4.0(2g) only; version 3.1(2i) only; version 3.1(1d) only; version 4.0(4i) only; version 4.1(1c) only; version 4.0(2c) only; …

Published 2026-08-05. Last modified 2026-08-06.