Incomplete blacklist vulnerability in Rockliffe MailSite Express before 6.1.22 allows remote attackers to upload and execute arbitrary script files by giving the files specific extensions, such as (1) .unk, (2) .asa, and possibly (3) .htr and (4) .aspx, which are not filtered like the .asp extension.

Incomplete blacklist vulnerability in Mailsite Express allows remote attackers to upload and possibly execute files via attachments with executable extensions such as ASPX, which are not converted to .TXT like other dangerous extensions, and which can be directly requested from the cache directory.

Mailsite Express allows remote attackers to upload and execute files with executable extensions such as ASP by attaching the file using the "compose page" feature, then accessing the file from the cache directory before saving or sending the message.

Buffer overflow in wconsole.dll in Rockliffe MailSite Management Agent allows remote attackers to execute arbitrary commands via a long query_string parameter in the HTTP GET request.