FreePBX - SQLi (CVE-2025-57819)

CVE-2025-57819 is a critical vulnerability in FreePBX versions 15, 16, and 17 that allows unauthenticated attackers to access the FreePBX Administrator interface due to improper sanitization of user input. Exploiting this flaw can lead to arbitrary database manipulation and remote code execution, making it possible for attackers to fully compromise affected systems.

CrowdSec has been tracking this vulnerability and its exploits since 19th of September 2025.

CrowdSec network data shows that most actors exploiting CVE-2025-57819 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2025-57819 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2025-57819 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Attackers exploit FreePBX by sending crafted requests to /admin/ajax.php with malicious SQL code in the brand parameter, enabling unauthenticated remote code execution and manipulation of backend cron jobs. Subsequent requests may target dynamically created PHP files in the web root to execute arbitrary commands.