The default installation of Fastream NETFile FTP/Web Server 7.4.6, which supports FXP, does not require that the IP address in a PORT command be the same as the IP of the logged in user, which allows remote attackers to conduct FTP Bounce attacks to bypass firewall rules or cause a denial of service.

Directory traversal vulnerability in Fastream NETFile FTP/Web Server 6.7.2.1085 and earlier allows remote attackers to create or delete arbitrary files via .. (dot dot) and // (double slash) sequences in the filename parameter.

Fastream NETFile FTP Server 6.7.2.1085 and earlier allows remote attackers to cause a denial of service (temporary hang) via the cd command with an unusual argument, possibly due to multiple leading slashes and/or an access to the floppy drive ("A").

Fastream NETFile FTP/Web Server 6.5.1.980 allows remote attackers to cause a denial of service via a username that does not exist.