Severity Rating: Important Revision Note: V3.0 (September 12, 2017): Revised the Affected Software table to include Windows 10 Version 1703 for 32-bit Systems and Windows 10 Version 1703 for x64-based Systems because they are affected by CVE-2016-3376. Consumers using Windows 10 are automatically protected. Microsoft recommends that enterprise customers running Windows 10 Version 1703 ensure they have update 4038788 installed to be protected from this vulnerability. Summary: This security update resolves vulnerabilities in Microsoft Windows. The more severe of the vulnerabilities could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application that could exploit the vulnerabilities and take control of an affected system.