Heap-based buffer overflow in Microsoft Infotech Storage System Library (itss.dll) allows user-assisted attackers to execute arbitrary code via a crafted CHM / ITS file that triggers the overflow while decompiling.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26340
http://www.vupen.com/english/advisories/2006/1761
http://www.securityfocus.com/archive/1/433854/100/0/threaded
http://www.securityfocus.com/archive/1/433833/30/5040/threaded
http://www.securityfocus.com/archive/1/433435/100/0/threaded
http://www.reversemode.com/advisories/advisory-itss.pdf