CVE-2018-5535: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

On F5 BIG-IP 14.0.0, 13.0.0-13.1.0, 12.1.0-12.1.3, or 11.5.1-11.6.3 specifically crafted HTTP responses, when processed by a Virtual Server with an associated QoE profile that has Video enabled, may cause TMM to incorrectly buffer response data causing the TMM to restart resulting in a Denial of Service.

Affected products

  • F5 BIG-IP Access Policy Manager: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Advanced Firewall Manager: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Analytics: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Application Acceleration Manager: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Application Security Manager: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Domain Name System: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Edge Gateway: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Fraud Protection Service: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Global Traffic Manager: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Link Controller: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Local Traffic Manager: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Policy Enforcement Manager: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only
  • F5 BIG-IP Webaccelerator: from 11.2.1, up to and including 11.6.3; from 12.1.0, up to and including 12.1.3; from 13.0.0, up to and including 13.1.1; version 14.0.0 only

Published 2018-07-19. Last modified 2026-06-17.