CSIS Security Advisory – A remote denial of service condition exists in GFI MailEssentials due to a bug in Microsoft HTML parser.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/35586/CSIS2005-1.txt
Source: https://packetstormsecurity.com/files/35586/CSIS2005-1.txt.html