CVE-2020-5935: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 5.9. EPSS: 0.8% chance of exploitation in the next 30 days.

On BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, FPS, GTM, Link Controller, PEM) versions 15.1.0-15.1.0.5, 14.1.0-14.1.2.3, and 13.1.0-13.1.3.3, when handling MQTT traffic through a BIG-IP virtual server associated with an MQTT profile and an iRule performing manipulations on that traffic, TMM may produce a core file.

Affected products

  • F5 BIG-IP Access Policy Manager: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Advanced Firewall Manager: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Analytics: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Application Acceleration Manager: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Application Security Manager: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Domain Name System: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Fraud Protection Service: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Global Traffic Manager: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Link Controller: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Local Traffic Manager: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)
  • F5 BIG-IP Policy Enforcement Manager: from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.4 (fixed in 14.1.2.4); from 15.0.0, before 15.1.1 (fixed in 15.1.1)

Published 2020-10-29. Last modified 2026-06-17.