CVE-2025-61938: F5 BIG-IP Advanced Web Application Firewall

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

When a BIG-IP Advanced WAF or ASM security policy is configured with a URL greater than 1024 characters in length for the Data Guard Protection Enforcement setting, either manually or through the automatic Policy Builder, the bd process can terminate repeatedly.  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 17.1.3 (fixed in 17.1.3); version 17.5.0 only
• F5 BIG-IP Application Security Manager: 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.