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HistoryApr 12, 2016 - 12:00 a.m.

MS16-045: Security update for Windows Hyper-V: April 12, 2016

2016-04-1200:00:00
Microsoft
support.microsoft.com
19

EPSS

0.073

Percentile

94.1%

<html><body><p>Resolves vulnerabilities in Windows that could allow remote code execution if an authenticated attacker on a guest operating system runs a specially crafted application that causes the Hyper-V host operating system to execute arbitrary code. Customers who have not enabled the Hyper-V role are not affected.</p><h2>Summary</h2><div>This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an authenticated attacker on a guest operating system runs a specially crafted application that causes the Hyper-V host operating system to execute arbitrary code. Customers who have not enabled the Hyper-V role are not affected.<br /><br /><br /><br />To learn more about the vulnerability, see <a href=“https://technet.microsoft.com/library/security/ms16-045” target=“_self”>Microsoft Security Bulletin MS16-045</a>. </div><h2>More Information</h2><div><span>Important </span><ul><li>All future security and non-security updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update <a href=“https://support.microsoft.com/en-us/help/2919355” target=“_self”>2919355</a> to be installed. We recommend that you install update <a href=“https://support.microsoft.com/en-us/help/2919355” target=“_self”>2919355</a> on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates. </li><li>If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see <a href=“https://technet.microsoft.com/en-us/library/hh825699” target=“_self”>Add language packs to Windows</a>.<br /></li></ul></div><h2>Additional information about this security update</h2><div><br />The following articles contain additional information about this security update as it relates to individual product versions. The articles may contain known issue information.<br /><ul><li><a href=“https://support.microsoft.com/help/3135456” target=“_self”>3135456</a> MS16-045: Description of the security update for Windows Hyper-V: April 12, 2016</li><li><a href=“https://support.microsoft.com/help/3147461” target=“_self”>3147461</a> Cumulative Update for Windows 10: April 12, 2016</li></ul></div><h2>How to obtain and install the update</h2><div><a></a><h3>Method 1: Windows Update</h3><div>This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see <br /><a href=“https://www.microsoft.com/security/pc-security/updates.aspx” target=“_self”>Get security updates automatically</a>.<br /><br /><span>Note</span> For Windows RT 8.1, this update is available through Windows Update only.<br /></div><div><div><div><span><span></span></span><span><span>Method 2: Microsoft Download Center</span></span></div><div><span><div>You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.<br /><br />Click the download link in <a href=“https://technet.microsoft.com/library/security/ms16-045” target=“_self”>Microsoft Security Bulletin MS16-045</a> that corresponds to the version of Windows that you are running. <br /></div><br /></span></div></div></div></div><h2></h2><div><div><div><div><span><span></span></span><span><span>Security update deployment information<br /></span></span></div><div><span><div><h4>Windows 8.1 (all editions)<br /></h4><span>Reference Table</span><br /><br />The following table contains the security update information for this software.<br /><div><table><tr><td><span>Security update file name</span></td><td>For all supported x64-based editions of Windows 8.1:<br /><span>Windows8.1-KB3135456-x64.msu</span></td></tr><tr><td><span>Installation switches</span></td><td>See <a href=“https://support.microsoft.com/help/934307” target=“_self”>Microsoft Knowledge Base Article 934307</a></td></tr><tr><td><span>Restart requirement</span></td><td>A system restart is required after you apply this security update.</td></tr><tr><td><span>Removal information</span></td><td>To uninstall an update installed by WUSA, use the <span>/Uninstall</span> setup switch or click <span>Control Panel</span>, click <span>System and Security</span>, click <span>Windows Update</span>, and then under See also, click <span>Installed updates</span> and select from the list of updates.</td></tr><tr><td><span>File information</span></td><td>See <a href=“https://support.microsoft.com/help/3135456” target=“_self”>Microsoft Knowledge Base Article 3135456</a></td></tr><tr><td><span>Registry key verification</span></td><td><span>Note</span> A registry key does not exist to validate the presence of this update.</td></tr></table></div><h4>Windows Server 2012 and Windows Server 2012 R2 (all editions)<br /></h4><span>Reference Table</span><br /><br />The following table contains the security update information for this software.<br /><div><table><tr><td><span>Security update file name</span></td><td>For all supported editions of Windows Server 2012:<br /><span>Windows8-RT-KB3135456-x64.msu</span></td></tr><tr><td></td><td>For all supported editions of Windows Server 2012 R2:<br /><span>Windows8.1-KB3135456-x64.msu</span></td></tr><tr><td><span>Installation switches</span></td><td>See <a href=“https://support.microsoft.com/help/934307” target=“_self”>Microsoft Knowledge Base Article 934307</a></td></tr><tr><td><span>Restart requirement</span></td><td>A system restart is required after you apply this security update.</td></tr><tr><td><span>Removal information</span></td><td>To uninstall an update installed by WUSA, use the <span>/Uninstall</span> setup switch or click <span>Control Panel</span>, click <span>System and Security</span>, click <span>Windows Update</span>, and then under See also, click <span>Installed updates</span> and select from the list of updates.</td></tr><tr><td><span>File information</span></td><td>See <a href=“https://support.microsoft.com/help/3135456” target=“_self”>Microsoft Knowledge Base Article 3135456</a></td></tr><tr><td><span>Registry key verification</span></td><td><span>Note</span> A registry key does not exist to validate the presence of this update.</td></tr></table></div><h4>Windows 10 (all editions)<br /></h4><span>Reference Table</span><br /><br />The following table contains the security update information for this software.<br /><div><table><tr><td><span>Security update file name</span></td><td>For all supported x64-based editions of Windows 10:<br /><span>Windows10.0-KB3147461-x86.msu</span></td></tr><tr><td><span>Installation switches</span></td><td>See <a href=“https://support.microsoft.com/help/934307” target=“_self”>Microsoft Knowledge Base Article 934307</a></td></tr><tr><td><span>Restart requirement</span></td><td>A system restart is required after you apply this security update.</td></tr><tr><td><span>Removal information</span></td><td>To uninstall an update installed by WUSA, use the <span>/Uninstall</span> setup switch or click <span>Control Panel</span>, click <span>System and Security</span>, click <span>Windows Update</span>, and then under See also, click <span>Installed updates</span> and select from the list of updates.</td></tr><tr><td><span>File information</span></td><td>See <a href=“https://support.microsoft.com/help/3147461” target=“_self”>Microsoft Knowledge Base Article 3147461</a></td></tr><tr><td><span>Registry key verification</span></td><td><span>Note</span> A registry key does not exist to validate the presence of this update.</td></tr></table></div></div><br /></span></div></div></div><div><div><div><span><span></span></span><span><span>How to obtain help and support for this security update</span></span></div><div><span><div>Help for installing updates: <a href=“https://support.microsoft.com/ph/6527” target=“_self”>Support for Microsoft Update</a><br /><br />Security solutions for IT professionals: <a href=“https://technet.microsoft.com/security/bb980617.aspx” target=“_self”>TechNet Security Troubleshooting and Support</a><br /><br />Help for protecting your Windows-based computer from viruses and malware: <a href=“https://support.microsoft.com/contactus/cu_sc_virsec_master” target=“_self”>Virus Solution and Security Center</a><br /><br />Local support according to your country: <a href=“https://www.microsoft.com/en-us/locale.aspx” target=“_self”>International Support</a></div><br /></span></div></div></div></div></body></html>