CVE-2021-23054: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

On version 16.x before 16.1.0, 15.1.x before 15.1.4, 14.1.x before 14.1.4.4, and all versions of 13.1.x, 12.1.x, and 11.6.x, a reflected cross-site scripting (XSS) vulnerability exists in the resource information page for authenticated users when a full webtop is configured on the BIG-IP APM system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 BIG-IP Access Policy Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, before 14.1.4.4 (fixed in 14.1.4.4); from 15.1.0, before 15.1.4 (fixed in 15.1.4); from 16.0.0, before 16.0.1 (fixed in 16.0.1)

Published 2021-09-27. Last modified 2026-06-17.