CVE-2018-5531: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Through undisclosed methods, on F5 BIG-IP 13.0.0-13.1.0.7, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.2.1-11.5.6, adjacent network attackers can cause a denial of service for VCMP guest and host systems. Attack must be sourced from adjacent network (layer 2).

Affected products

F5 BIG-IP Access Policy Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Advanced Firewall Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Analytics: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Application Acceleration Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Application Security Manager: from 10.1.0, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Domain Name System: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Edge Gateway: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Fraud Protection Service: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Global Traffic Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Link Controller: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Local Traffic Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Policy Enforcement Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7
F5 BIG-IP Webaccelerator: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.1; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7

Published 2018-07-25. Last modified 2026-06-17.