TransSoft Broker FTP Server 3.0 x/4.0 - User Name Buffer Overflow

source: https://www.securityfocus.com/bid/783/info

If an unusually long user name is passed to the Broker FTP server software, the program will crash. If the program is running as a service, the service will consume all available memory and crash the entire system. 

https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/19611.zip