Directory traversal vulnerability in BisonWare BisonFTP 3.5 allows remote attackers to read arbitrary files via a ../ (dot dot slash) in a RETR command.

BisonWare FTP Server 4.1 and earlier allows remote attackers to cause a denial of service via a malformed PORT command that contains a non-numeric character and a large number of carriage returns.

BisonFTP V4R1 allows local users to access directories outside of their home directory by uploading .bdl files, which can then be linked to other directories.

Buffer overflows in Bisonware FTP server prior to 4.1 allow remote attackers to cause a denial of service, and possibly execute arbitrary commands, via long (1) USER, (2) LIST, or (3) CWD commands.

Remote attackers can cause a denial of service in FTP by issuing multiple PASV commands, causing the server to run out of available ports.