CVE-2019-6590: F5 BIG-IP Local Traffic Manager

Medium severity, CVSS 5.9. EPSS: 1.5% chance of exploitation in the next 30 days.

On BIG-IP LTM 13.0.0 to 13.0.1 and 12.1.0 to 12.1.3.6, under certain conditions, the TMM may consume excessive resources when processing SSL Session ID Persistence traffic.

Affected products

• F5 BIG-IP Local Traffic Manager: from 11.5.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3.6; from 13.0.0, up to and including 13.0.1

Published 2019-02-05. Last modified 2026-06-17.