CVE-2018-5532: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 5.3. EPSS: 1.2% chance of exploitation in the next 30 days.

On F5 BIG-IP 13.0.0, 12.1.0-12.1.2, 11.6.0-11.6.3.1, or 11.2.1-11.5.6 a domain name cached within the DNS Cache of TMM may continue to be resolved by the cache even after the parent server revokes the record, if the DNS Cache is receiving a stream of requests for the cached name.

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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only
  • 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 12.1.2; version 13.0.0 only

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