CVE-2019-6684: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

On versions 15.0.0-15.0.1.1, 14.0.0-14.1.2.2, 13.1.0-13.1.3.1, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, under certain conditions, a multi-bladed BIG-IP Virtual Clustered Multiprocessing (vCMP) may drop broadcast packets when they are rebroadcast to the vCMP guest secondary blades. An attacker can leverage the fragmented broadcast IP packets to perform any type of fragmentation-based attack.

Affected products

  • F5 BIG-IP Access Policy Manager: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Advanced Firewall Manager: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Analytics: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Application Acceleration Manager: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Application Security Manager: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Domain Name System: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Fraud Protection Service: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Global Traffic Manager: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Link Controller: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Local Traffic Manager: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)
  • F5 BIG-IP Policy Enforcement Manager: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.0.0, before 13.1.3.2 (fixed in 13.1.3.2); from 14.0.0, before 14.1.2.3 (fixed in 14.1.2.3); from 15.0.0, before 15.1.0 (fixed in 15.1.0)

Published 2019-12-23. Last modified 2026-06-17.