CVE-2019-6623: 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 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, undisclosed traffic sent to BIG-IP iSession virtual server may cause the Traffic Management Microkernel (TMM) to restart, resulting in a Denial-of-Service (DoS).

Affected products

F5 BIG-IP Access Policy Manager: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Advanced Firewall Manager: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Analytics: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Application Acceleration Manager: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Application Security Manager: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Domain Name System: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, before 14.0.0.4 (fixed in 14.0.0.4); from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Edge Gateway: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Fraud Protection Service: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Global Traffic Manager: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Link Controller: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Local Traffic Manager: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Policy Enforcement Manager: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5
F5 BIG-IP Webaccelerator: from 12.1.0, up to and including 12.1.4; from 13.0.0, up to and including 13.1.1.4; from 14.0.0, up to and including 14.0.0.4; from 14.1.0, up to and including 14.1.0.5

Published 2019-07-02. Last modified 2026-06-17.