Microsoft Office 2016 Click-to-Run (C2R) allows a remote code execution vulnerability due to the way files are handled in memory, aka "Microsoft Excel Remote Code Execution Vulnerability".Referenceshttp://www.securitytracker.com/id/1039989http://www.securityfocus.com/bid/102067https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11935
