Version 4.3.8 and earlier contain significant security flaws that allow attackers to fully compromise the host system:
This version handles:
Wing FTP Server 4.3.8 is a professional-grade file transfer server designed for Windows, Linux, macOS, and Solaris. Released in the late 2010s, this version represents a mature iteration of the software—just before the developers began introducing major UI overhauls and cloud-centric features in versions 5.x and 6.x. wing ftp server 4.3.8
It supports Windows, Linux, Mac OS, and Solaris, making it a flexible choice for diverse environments. Critical Security Risks (Why to Avoid 4.3.8) Version 4