CVE-2021-23014: F5 BIG-IP Advanced Web Application Firewall

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, and 14.1.x before 14.1.4, BIG-IP Advanced WAF and ASM are missing authorization checks for file uploads to a specific directory within the REST API which might allow Authenticated users with guest privileges to upload files. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 BIG-IP Advanced Web Application Firewall: from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.3 (fixed in 15.1.3); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
• F5 BIG-IP Application Security Manager: from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.3 (fixed in 15.1.3); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)

Published 2021-05-10. Last modified 2026-06-17.