Description of the security update for vulnerabilities in Windows Embedded POSReady 2009: February 12, 2019

Applies to: Windows Embedded POSReady 2009


This security update addresses the following vulnerabilities:
  • An elevation of privilege vulnerability exists when Windows incorrectly handles calls to Win32k.sys.
  • An elevation of privilege vulnerability exists in Windows when the Win32k component incorrectly handles objects in memory.
  • An information disclosure vulnerability exists when the win32k component incorrectly provides kernel information.
To learn more about the vulnerabilities, see the following Common Vulnerabilities and Exposures (CVE):

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 Windows Update: FAQ.

Method 2: Microsoft Update Catalog

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


  • 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.

Information about protection and security

File information

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.