Affected: Microsoft Office, Microsoft Office Word Viewer, Microsoft Internet Explorer 9, Microsoft Internet Explorer 11, Microsoft Excel Viewer, Microsoft Internet Explorer 10

A remote code execution vulnerability exists in the way that the MSHTML engine inproperly validates input, aka "MSHTML Engine Remote Code Execution Vulnerability." This affects Microsoft Office, Microsoft Office Word Viewer, Internet Explorer 9, Internet Explorer 11, Microsoft Excel Viewer, Internet Explorer 10, Office 365 ProPlus.