Buffer overflow in Becky! Internet Mail 2.48.02 and earlier allows remote attackers to execute arbitrary code via a mail message with a crafted return receipt request.
https://exchange.xforce.ibmcloud.com/vulnerabilities/48684
http://www.securityfocus.com/bid/33756
http://www.rimarts.jp/downloads/B2/Readme-e.txt
http://secunia.com/advisories/33892