Multiple buffer overflows in the IMAP service (MEIMAPS.EXE) in MailEnable Professional Edition and Enterprise Edition 3.13 and earlier allow remote authenticated attackers to execute arbitrary code via long arguments to the (1) FETCH, (2) EXAMINE, and (3) UNSUBSCRIBE commands.
https://www.exploit-db.com/exploits/5249
https://exchange.xforce.ibmcloud.com/vulnerabilities/41058
http://www.vupen.com/english/advisories/2008/0799/references
http://www.securitytracker.com/id?1019565
http://www.securityfocus.com/archive/1/489270/100/0/threaded
http://securityreason.com/securityalert/3724