CVE-2022-26071: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all versions of 12.1.x and 11.6.x, a flaw in the way reply ICMP packets are limited in the Traffic Management Microkernel (TMM) allows an attacker to quickly scan open UDP ports. This flaw allows an off-path remote attacker to effectively bypass source port UDP randomization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Affected products

F5 BIG-IP Access Policy Manager: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Advanced Firewall Manager: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Analytics: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Application Acceleration Manager: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Application Security Manager: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Domain Name System: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Fraud Protection Service: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Global Traffic Manager: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Link Controller: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Local Traffic Manager: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …
F5 BIG-IP Policy Enforcement Manager: version 11.6.1 only; version 11.6.2 only; version 11.6.3 only; version 11.6.4 only; version 11.6.5 only; version 12.1.0 only; …

Published 2022-05-05. Last modified 2026-06-17.