CVE-2020-5883: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2.3, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, when a virtual server is configured with HTTP explicit proxy and has an attached HTTP_PROXY_REQUEST iRule, POST requests sent to the virtual server cause an xdata memory leak.

Affected products

F5 BIG-IP Access Policy Manager: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Advanced Firewall Manager: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Application Acceleration Manager: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Application Security Manager: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Edge Gateway: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Fraud Protection Service: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Link Controller: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Local Traffic Manager: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Policy Enforcement Manager: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3
F5 BIG-IP Webaccelerator: from 13.1.0, up to and including 13.1.3.1; from 14.0.0, up to and including 14.0.1; from 14.1.0, up to and including 14.1.2.3; from 15.0.0, up to and including 15.0.1.3

Published 2020-04-30. Last modified 2026-06-17.