ArGoSoft FTP before 1.4.2.1 generates an error message if the user name does not exist instead of prompting for a password, which allows remote attackers to determine valid usernames.
ArGoSoft FTP Server 1.2.2.2 allows remote attackers to read arbitrary files and directories by uploading a .lnk (link) file that points to the target file.
ArGoSoft FTP Server 1.2.2.2 uses weak encryption for user passwords, which allows an attacker with access to the password file to gain privileges.
Directory traversal vulnerability in webmail feature of ArGoSoft Mail Server Plus or Pro 1.8.1.5 and earlier allows remote attackers to read arbitrary files via .. (dot dot) sequences in a URL.