Directory traversal vulnerability in Pablo Software Solutions Quick 'n Easy FTP Server 1.77, and possibly earlier versions, allows remote authenticated users to determine the existence of arbitrary files via a .. (dot dot) in the DEL command, which triggers different error messages depending on whether the file exists or not.

Quick 'n Easy FTP Server 3.0 allows remote attackers to cause a denial of service (application crash or CPU consumption) via a long USER command.

Buffer overflow in Unicode processing in the logging functionality in Pablo Software Solutions Quick 'n Easy FTP Server Professional and Lite, probably 3.0, allows remote authenticated users to execute arbitrary code by sending a command with a long argument, which triggers a buffer overflow when an admin selects the Logging section in the FTP server main window. NOTE: the original researcher claims that the vendor disputes this issue.

Buffer overflow in Quick 'n Easy FTP Server 3.0 allows remote authenticated users to execute arbitrary commands via a long argument to the LIST command, a different issue than CVE-2006-2027.

Quick 'n Easy FTP Service 3.2 - Unquoted Service Path

Quick 'n Easy FTP Service 3.2 contains an unquoted service path vulnerability that allows local attackers to execute arbitrary code during service startup. Attackers can exploit the misconfigured service binary path to inject malicious executables with elevated LocalSystem privileges during system boot or service restart.