Core FTP/SFTP Server 1.2 contains a buffer overflow vulnerability that allows attackers to crash the service by supplying an excessively long string in the User domain field. Attackers can paste a malicious payload containing 7000 bytes of data into the domain configuration to trigger an application crash and deny service.

Core FTP Server 1.2 before build 515 allows remote attackers to cause a denial of service (reachable assertion and crash) via an AUTH SSL command with malformed data, as demonstrated by pressing the enter key twice.

Core FTP Server 1.2 before build 515 allows remote authenticated users to obtain sensitive information (password for the previous user) via a USER command with a specific length, possibly related to an out-of-bounds read.

Directory traversal vulnerability in Core FTP Server 1.2 before build 515 allows remote authenticated users to determine the existence of arbitrary files via a /../ sequence in an XCRC command.