CVE-2023-22281: F5 BIG-IP Advanced Firewall Manager

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

On versions 17.0.x before 17.0.0.2, 16.1.x before 16.1.3.3, 15.1.x before 15.1.8, 14.1.x before 14.1.5.3, and all versions of 13.1.x, when a BIG-IP AFM NAT policy with a destination NAT rule is configured on a FastL4 virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 BIG-IP Advanced Firewall Manager: from 13.1.0, up to and including 13.1.5; from 14.1.0, before 14.1.5.3 (fixed in 14.1.5.3); from 15.1.0, before 15.1.8 (fixed in 15.1.8); from 16.1.0, before 16.1.3.3 (fixed in 16.1.3.3); from 17.0.0, before 17.0.0.2 (fixed in 17.0.0.2)

Published 2023-02-01. Last modified 2026-06-17.