Executive Summary This security update security Update For Windows 7 vulnerabilities in Microsoft Windows. This security update is rated Critical for all supported releases of Microsoft Windows. For more information, see the Affected Software and Vulnerability Severity Ratings section. The security update addresses the vulnerabilities by correcting how SMBv1 handles specially crafted requests.
For more information about the vulnerabilities, see the Vulnerability Information section. For more information about this update, see Microsoft Knowledge Base Article 4013389. Affected Software and Vulnerability Severity Ratings The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected.