Stack-based buffer overflow in Microsoft Help Workshop 4.03.0002 allows user-assisted remote attackers to execute arbitrary code via a crafted .cnt file composed of lines that begin with an integer followed by a space and a long string.
https://www.exploit-db.com/exploits/3149
https://exchange.xforce.ibmcloud.com/vulnerabilities/31555
http://www.securityfocus.com/bid/22100
http://www.securityfocus.com/archive/1/457210/100/0/threaded
http://securitytracker.com/id?1017530
http://securityreason.com/securityalert/2156