TYPSoft FTP 0.95 allows remote attackers to cause a denial of service (CPU consumption) via a "../../*" argument to (1) STOR or (2) RETR.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2001-1137
http://www.securityfocus.com/bid/3409
http://www.securityfocus.com/archive/1/219167