CVE-2025-55211: Sangoma FreePBX

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

FreePBX is an open-source web-based graphical user interface. From 17.0.19.11 to before 17.0.21, authenticated users of the Administrator Control Panel (ACP) can run arbitrary shell commands by maliciously changing languages of the framework module. This vulnerability is fixed in 17.0.21.

Affected products

• Sangoma FreePBX: from 17.0.19.11, before 17.0.21 (fixed in 17.0.21)

Published 2025-09-15. Last modified 2026-06-17.