Unspecified vulnerability in Kerio MailServer before 6.5.0 allows remote attackers to cause a denial of service (crash) via unspecified vectors related to decoding of uuencoded input, which triggers memory corruption.
http://www.vupen.com/english/advisories/2008/0594
http://www.securitytracker.com/id?1019428
http://www.securityfocus.com/bid/27868