CVE-2024-21789: F5 BIG-IP Advanced Web Application Firewall

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

When a BIG-IP ASM/Advanced WAF security policy is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Affected products

• F5 BIG-IP Advanced Web Application Firewall: from 17.1.0, before 17.1.1 (fixed in 17.1.1)
• F5 BIG-IP Application Security Manager: from 17.1.0, before 17.1.1 (fixed in 17.1.1)

Published 2024-02-14. Last modified 2026-06-17.