Buffer overflow in BlackMoon FTP Server 1.0 through 1.5 allows remote attackers to execute arbitrary code via a long argument to (1) USER, (2) PASS, or (3) CWD.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2002-0126
http://www.securityfocus.com/bid/3884
http://www.iss.net/security_center/static/7895.php