Wing FTP Server 4.3.8 is a legacy version of the Wing FTP Server software that is highly critical due to a well-known, actively exploited Remote Code Execution (RCE) vulnerability.

If you are currently running version 4.3.8, it is highly recommended to update immediately. This version is susceptible to a Remote Code Execution (RCE) vulnerability.

Wing FTP Server 4.3.8 is a cross-platform file transfer solution that supports FTP, FTPS, SFTP, and HTTP/S.  ⚠️ Security Warning 

3.4 Event Manager & Lua Scripting

One of the standout features of 4.3.8 is the Event Manager. You can trigger scripts (written in Lua) on events like:

Security Considerations for Using 4.3.8

This is critical. No software version is immune to vulnerabilities.

Actively monitor the application and system logs for unauthorized use of the Lua environment or suspicious PowerShell execution spawned by the Wing FTP process. Wing FTP Server