CVE-2020-5857: F5 BIG-IP Access Policy Manager

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

On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2.2, 13.1.0-13.1.3.1, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, undisclosed HTTP behavior may lead to a denial of service.

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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• F5 BIG-IP Edge Gateway: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• 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 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1
• F5 BIG-IP Webaccelerator: from 11.5.2, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3; from 14.1.0, up to and including 14.1.2; from 15.0.0, up to and including 15.0.1

Published 2020-03-27. Last modified 2026-06-17.