CVE-2025-54858: 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 BIG-IP ASM Security Policy is configured with a JSON content profile that has a malformed JSON schema, and the security policy is applied to 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 15.1.0, before 15.1.10.8 (fixed in 15.1.10.8); from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); from 17.5.0, before 17.5.1.3 (fixed in 17.5.1.3)
• F5 BIG-IP Application Security Manager: from 15.1.0, before 15.1.10.8 (fixed in 15.1.10.8); from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); from 17.5.0, before 17.5.1.3 (fixed in 17.5.1.3)

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