CVE-2019-6603: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1.8% chance of exploitation in the next 30 days.

In BIG-IP 11.5.1-11.5.8, 11.6.1-11.6.3, 12.1.0-12.1.3, and 13.0.0-13.0.1, malformed TCP packets sent to a self IP address or a FastL4 virtual server may cause an interruption of service. The control plane is not exposed to this issue. This issue impacts the data plane virtual servers and self IPs.

Affected products

  • F5 BIG-IP Access Policy Manager: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Advanced Firewall Manager: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Analytics: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Application Acceleration Manager: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Application Security Manager: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Edge Gateway: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Fraud Protection Service: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Global Traffic Manager: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Link Controller: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Local Traffic Manager: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Policy Enforcement Manager: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Protocol Security Manager: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1
  • F5 BIG-IP Webaccelerator: from 11.5.1, up to and including 11.5.8; from 11.6.1, up to and including 11.6.3; from 12.0.0, up to and including 12.1.3; from 13.0.0, up to and including 13.0.1

Published 2019-03-28. Last modified 2026-06-17.