CVE-2026-20087: Cisco Enterprise Nfv Infrastructure Software

Medium severity, CVSS 4.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with administrative privileges to conduct a stored 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 Enterprise Nfv Infrastructure Software: version 3.3.1 only; version 3.4.1 only; version 3.5.1 only; version 3.5.2 only; version 3.6.1 only; version 3.6.2 only; …
• Cisco Unified Computing System: version 3.1(1d) only; version 3.1(2b) only; version 3.1(2c) only; version 3.1(2d) only; version 3.1(2e) only; version 3.1(2g) only; …
• Cisco Unified Computing System E-Series Software: version 2.0.0 only; version 2.1.0 only; version 2.2.1 only; version 2.2.2 only; version 2.3.1 only; version 2.3.2 only; …

Published 2026-04-01. Last modified 2026-08-28.