CVE-2021-23051: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

On BIG-IP versions 15.1.0.4 through 15.1.3, when the Data Plane Development Kit (DPDK)/Elastic Network Adapter (ENA) driver is used with BIG-IP on Amazon Web Services (AWS) systems, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. This is due to an incomplete fix for CVE-2020-5862. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

F5 BIG-IP Access Policy Manager: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Advanced Firewall Manager: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Advanced Web Application Firewall: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Analytics: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Application Acceleration Manager: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Application Security Manager: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Domain Name System: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Fraud Protection Service: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Global Traffic Manager: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Link Controller: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)
F5 BIG-IP Local Traffic Manager: from 15.1.0.4, before 15.1.3.1 (fixed in 15.1.3.1)

Published 2021-09-14. Last modified 2026-06-17.