Severity Rating: Important Revision Note: V1.1 (August 23, 2017): Corrected the Updates Replaced for security update 3196726 to None. This is an informational change only. Customers who have already successfully installed the update do not need to take any further action. Summary: This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow elevation of privilege if a locally authenticated attacker runs a specially crafted application.