Use-after-free vulnerability in the SetMouseCapture implementation in mshtml.dll in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code via crafted JavaScript strings, as demonstrated by use of an ms-help: URL that triggers loading of hxds.dll.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18665
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-080
http://www.us-cert.gov/ncas/alerts/TA13-288A
http://www.securityfocus.com/bid/62453
http://technet.microsoft.com/security/advisory/2887505
http://jvndb.jvn.jp/ja/contents/2013/JVNDB-2013-000093.html