CVE-2019-6631: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 2.5% chance of exploitation in the next 30 days.

On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an interruption to service when processing traffic handled by a Virtual Server with an associated HTTP profile, in specific circumstances, when the requests do not strictly conform to RFCs.

Affected products

• F5 BIG-IP Access Policy Manager: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Advanced Firewall Manager: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Analytics: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Application Acceleration Manager: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Application Security Manager: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Domain Name System: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Edge Gateway: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Global Traffic Manager: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Link Controller: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Local Traffic Manager: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Policy Enforcement Manager: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Webaccelerator: from 11.5.2, up to and including 11.6.4
• F5 BIG-IP Websafe: from 11.5.2, up to and including 11.6.4

Published 2019-07-03. Last modified 2026-06-17.