Security update for the Windows win32k Information Disclosure Vulnerability in Windows Server 2008: May 9, 2017

ID KB4019204
Type mskb
Reporter Microsoft
Modified 2017-05-09T07:00:00




An information disclosure vulnerability exists when the win32k component incorrectly provides kernel information. An attacker who successfully exploits the vulnerability could obtain information to further compromise the user’s system.

To learn more about the vulnerability, go to the Security Update Guide.

More Information


  • 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 Add language packs to Windows.

How to obtain and install the update

Method 1: Windows Update

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 Get security updates automatically.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:
Security update deployment information: May 9, 2017

More Information


How to obtain help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: TechNet Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

File Information


File hash information

File name| SHA1 hash| SHA256 hash
Windows6.0-KB4019204-x64.msu| 6F7B323D9865D8B88CAEB3FC83A8BB74222AFC3F| E44B48BD9F07FA10CC183931D35E89828681A49DF52049AE0D28002337FB87FA
Windows6.0-KB4019204-ia64.msu| D16A080F7214A81D09FE1781685E84B0E55BBC71| 30D201FE117DFE3924B9E5E4ECBCE2F0E3921E76DD69FFC889DB8F7B78076FC9
Windows6.0-KB4019204-x86.msu| 8301605396E05D4B8E2EE38FCB3CD801AD019CCE| 61ED3DBC6DCA600139F6CA77D784B4C8EED77BC6762A1CE209A92642DBE7D23B

File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows Server 2008 file information

Note: The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.


For all supported x64-based versions

File name| File version| File size| Date| Time| Platform
Win32k.sys| 6.0.6002.19778| 2,806,272| 28-Apr-2017| 01:59| x64
Win32k.sys| 6.0.6002.24095| 2,808,320| 28-Apr-2017| 02:45| x64


For all supported ia64-based versions

File name| File version| File size| Date| Time| Platform
Win32k.sys| 6.0.6002.19778| 6,693,888| 28-Apr-2017| 01:45| IA-64
Win32k.sys| 6.0.6002.24095| 6,703,616| 28-Apr-2017| 02:21| IA-64


For all supported x86-based versions

File name| File version| File size| Date| Time| Platform
Win32k.sys| 6.0.6002.19778| 2,074,112| 28-Apr-2017| 03:15| x86
Win32k.sys| 6.0.6002.24095| 2,082,304| 28-Apr-2017| 03:51| x86