CVE-2025-59478: F5 BIG-IP Advanced Firewall Manager

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

When a BIG-IP AFM denial-of-service (DoS) protection profile is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 BIG-IP Advanced Firewall Manager: from 15.1.0, before 15.1.10.8 (fixed in 15.1.10.8); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only

Published 2025-10-15. Last modified 2026-10-08.