CVE-2021-23007: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 5.3. EPSS: 1.6% chance of exploitation in the next 30 days.

On BIG-IP versions 14.1.4 and 16.0.1.1, when the Traffic Management Microkernel (TMM) process handles certain undisclosed traffic, it may start dropping all fragmented IP traffic. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Affected products

• F5 BIG-IP Access Policy Manager: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Advanced Firewall Manager: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Advanced Web Application Firewall: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Analytics: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Application Acceleration Manager: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Application Security Manager: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Ddos Hybrid Defender: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Domain Name System: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Edge Gateway: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Fraud Protection Service: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Global Traffic Manager: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Link Controller: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Local Traffic Manager: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Policy Enforcement Manager: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP SSL Orchestrator: version 14.1.4 only; version 16.0.1.1 only
• F5 BIG-IP Webaccelerator: version 14.1.4 only; version 16.0.1.1 only

Published 2021-03-31. Last modified 2026-06-17.