http://msmvps.com/blogs/donna/archive/2004/12/17/26109.aspxWinRAR is "a powerful archive manager. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format". A vulnerability in the way WinRAR handlesenCommunityServer 2008.5 SP2 (Build: 40407.4157)