OleAut32.dll in OLE in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code via a crafted web site, as demonstrated by an array-redimensioning attempt that triggers improper handling of a size value in the SafeArrayDimen function, aka "Windows OLE Automation Array Remote Code Execution Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-064
http://www.us-cert.gov/ncas/alerts/TA14-318B
http://www.securitytracker.com/id/1031184