CVE-2026-40060: 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 Advanced WAF or ASM security policy is configured on a virtual server, undisclosed requests can cause the bd process to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 BIG-IP Advanced Web Application Firewall: from 16.1.0, up to and including 16.1.6; from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; version 21.0.0 only
• F5 BIG-IP Application Security Manager: from 16.1.0, up to and including 16.1.6; from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; version 21.0.0 only

Published 2026-05-13. Last modified 2026-06-29.