Stack-based buffer overflow in the MercuryS SMTP server in Mercury Mail Transport System, possibly 4.51 and earlier, allows remote attackers to execute arbitrary code via a long AUTH CRAM-MD5 string. NOTE: this might overlap CVE-2006-5961.
http://archives.neohapsis.com/archives/fulldisclosure/2007-08/0341.html
http://secunia.com/advisories/26519
https://exchange.xforce.ibmcloud.com/vulnerabilities/36117
https://exchange.xforce.ibmcloud.com/vulnerabilities/36299
https://www.exploit-db.com/exploits/4294