CVE-2021-23016: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

On BIG-IP APM versions 15.1.x before 15.1.3, 14.1.x before 14.1.4.1, 13.1.x before 13.1.4, and all versions of 16.0.x, 12.1.x, and 11.6.x, an attacker may be able to bypass APM's internal restrictions and retrieve static content that is hosted within APM by sending specifically crafted requests to an APM Virtual Server. 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, before 13.1.4 (fixed in 13.1.4); from 14.1.0, before 14.1.4.1 (fixed in 14.1.4.1); from 15.1.0, before 15.1.3 (fixed in 15.1.3); from 16.0.0, up to and including 16.0.1

Published 2021-05-10. Last modified 2026-06-17.