Heap-based buffer overflow in HTML Help ActiveX control (hhctrl.ocx) in Microsoft Internet Explorer 6.0 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code by repeatedly setting the Image field of an Internet.HHCtrl.1 object to certain values, possibly related to improper escaping and long strings.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13
https://exchange.xforce.ibmcloud.com/vulnerabilities/27573
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-046
http://www.vupen.com/english/advisories/2006/2635
http://www.vupen.com/english/advisories/2006/2634
http://www.us-cert.gov/cas/techalerts/TA06-220A.html
http://www.tippingpoint.com/security/advisories/TSRT-06-08.html
http://www.securityfocus.com/archive/1/442733/100/0/threaded
http://www.kb.cert.org/vuls/id/159220
http://securitytracker.com/id?1016434
http://secunia.com/advisories/20906
http://browserfun.blogspot.com/2006/07/mobb-2-internethhctrl-image-property.html