Description of the security update for the elevation of privilege vulnerabilities in Windows Embedded POSReady 2009 and Windows Embedded Standard 2009: December 11, 2018

Applies to: Windows Embedded Standard 2009Windows Embedded POSReady 2009


Windows elevation of privilege vulnerabilities exist in the following scenarios:
  • When Windows incorrectly handles calls to Win32k.sys.
  • When the Win32k component does not correctly handle objects in memory.
  • When the Windows kernel mode driver does not correctly handle objects in memory.
To learn more about these vulnerabilities, go to the following Common Vulnerabilities and Exposures (CVE). 

How to get and install the update

Method 1: Windows Update

This update is availablethrough Windows Update. When you turn on automatic updating, this update willbe downloaded and installed automatically. For more information about how toturn on automatic updating, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalonepackage for this update, go to the Microsoft Update Catalog website.


If you install a language pack after you installthis update, you must reinstall this update. Therefore, we recommend that youinstall any language packs that you need before you install this update. Formore information, see Addlanguage packs to Windows.

Update information

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

File information

File hash information
File nameSHA1 hashSHA256 hash
File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows XP file information
For all supported x86-based versions
File nameFile versionFile sizeDateTimePlatform

How to get help and support for this security update

Help for installing updates: Protect yourself online 

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

Local support according to your country: International Support