Version 4.3.8 and earlier versions are known to contain a critical vulnerability.
If you are looking to download version 4.3.8, it is highly recommended to reconsider due to critical vulnerabilities that can compromise your server. Why You Should Avoid Wing FTP Server 4.3.8 wing ftp server 4.3.8 download
This exploit can grant an attacker full SYSTEM-level privileges , allowing them to steal data or take complete control of the server. Version 4
The latest version, , offers significantly better security and modern features: Wing FTP Server History wing ftp server 4.3.8 download
The developer, Wing Soft, no longer provides downloads for these legacy versions due to these security concerns. Better Alternatives: Current Wing FTP Versions
Authenticated attackers can use specially crafted Lua scripts to execute arbitrary PowerShell commands on the host system.