CVE-2021-22984: F5 BIG-IP Advanced Web Application Firewall

Medium severity, CVSS 6.1. EPSS: 1.1% chance of exploitation in the next 30 days.

On BIG-IP Advanced WAF and ASM version 15.1.x before 15.1.0.2, 15.0.x before 15.0.1.4, 14.1.x before 14.1.2.5, 13.1.x before 13.1.3.4, 12.1.x before 12.1.5.2, and 11.6.x before 11.6.5.2, when receiving a unauthenticated client request with a maliciously crafted URI, a BIG-IP Advanced WAF or ASM virtual server configured with a DoS profile with Proactive Bot Defense (versions prior to 14.1.0), or a Bot Defense profile (versions 14.1.0 and later), may subject clients and web servers to Open Redirection attacks. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Affected products

• F5 BIG-IP Advanced Web Application Firewall: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.5 (fixed in 14.1.2.5); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.2 (fixed in 15.1.0.2)
• F5 BIG-IP Application Security Manager: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.5 (fixed in 14.1.2.5); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.2 (fixed in 15.1.0.2)

Published 2021-02-12. Last modified 2026-06-17.