CVE-2019-6471: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 5.9. EPSS: 3.3% chance of exploitation in the next 30 days.

A race condition which may occur when discarding malformed packets can result in BIND exiting due to a REQUIRE assertion failure in dispatch.c. Versions affected: BIND 9.11.0 -> 9.11.7, 9.12.0 -> 9.12.4-P1, 9.14.0 -> 9.14.2. Also all releases of the BIND 9.13 development branch and version 9.15.0 of the BIND 9.15 development branch and BIND Supported Preview Edition versions 9.11.3-S1 -> 9.11.7-S1.

Affected products

  • F5 BIG-IP Access Policy Manager: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 14.0.0 only; version 14.1.0 only; …
  • F5 BIG-IP Advanced Firewall Manager: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 14.0.0 only; version 14.1.0 only; …
  • F5 BIG-IP Analytics: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 14.0.0 only; version 14.1.0 only; …
  • F5 BIG-IP Application Acceleration Manager: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 14.0.0 only; version 14.1.0 only; …
  • F5 BIG-IP Application Security Manager: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 14.0.0 only; version 14.1.0 only; …
  • F5 BIG-IP Domain Name System: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 9.2.2 only; version 14.0.0 only; …
  • F5 BIG-IP Edge Gateway: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 14.0.0 only; version 14.1.0 only; …
  • F5 BIG-IP Fraud Protection Service: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 14.0.0 only; version 14.1.0 only; …
  • F5 BIG-IP Global Traffic Manager: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 9.2.2 only; version 14.0.0 only; …
  • F5 BIG-IP Link Controller: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 9.2.2 only; version 14.0.0 only; …
  • F5 BIG-IP Local Traffic Manager: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 14.0.0 only; version 14.1.0 only; …
  • F5 BIG-IP Policy Enforcement Manager: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 9.2.2 only; version 14.0.0 only; …
  • F5 BIG-IP Webaccelerator: from 11.5.2, up to and including 11.5.9; from 11.6.1, up to and including 11.6.4; from 12.1.0, up to and including 12.1.4; from 13.1.0, up to and including 13.1.1; version 9.2.2 only; version 14.0.0 only; …
  • F5 BIG-IQ Centralized Management: from 5.1.0, up to and including 5.4.0; from 6.0.0, up to and including 6.1.0
  • F5 Enterprise Manager: version 3.1.1 only
  • F5 Iworkflow: version 2.3.0 only
  • ISC BIND: from 9.11.0, up to and including 9.11.7; from 9.12.0, up to and including 9.12.3; from 9.13.0, up to and including 9.13.7; from 9.14.0, up to and including 9.14.2; from 9.15.0, up to and including 9.15.5; version 9.11.3 only; …

Published 2019-10-09. Last modified 2026-06-17.