The Vector Markup Language (VML) implementation in Microsoft Internet Explorer 6 through 10 does not properly allocate buffers, which allows remote attackers to execute arbitrary code via a crafted web site, aka "VML Memory Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16175
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-010