"CuteFTP is a Windows based File Transfer Protocol (FTP) client that
allows users to utilize the capabilities of FTP without having to
know all the details of the protocol itself. CuteFTP simplifies FTP
by offering a user-friendly Windows interface instead of a cumbersome
command line utility. CuteFTP gives novice PC users the ability to
upload, download and edit files on remote FTP servers around the world."
Problem
It's possible to crash CuteFTP (and run shellcode(?)) by sending
long (>2048b) ftp-banner to it. As u understand, this problem could
be used by FTP server.