CVE-2019-6596: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

In BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, 12.1.0-12.1.3.6, 11.6.1-11.6.3.2, or 11.5.1-11.5.8, when processing fragmented ClientHello messages in a DTLS session TMM may corrupt memory eventually leading to a crash. Only systems offering DTLS connections via APM are impacted.

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 13.1.1; version 14.0.0 only

Published 2019-03-13. Last modified 2026-06-17.