CVE-2021-23040: F5 BIG-IP Advanced Firewall Manager

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

On BIG-IP AFM version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4.2, 13.1.x before 13.1.4.1, and all versions of 12.1.x, a SQL injection vulnerability exists in an undisclosed page of the BIG-IP Configuration utility. This issue is exposed only when BIG-IP AFM is provisioned. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 BIG-IP Advanced Firewall Manager: from 12.1.0, up to and including 12.1.6; from 13.1.0, before 13.1.4.1 (fixed in 13.1.4.1); from 14.1.0, before 14.1.4.2 (fixed in 14.1.4.2); from 15.1.0, before 15.1.3 (fixed in 15.1.3); from 16.0.0, before 16.0.1.2 (fixed in 16.0.1.2)

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