Description of the security update for the Windows Wireless WPA pairwise encryption key reinstallation vulnerability in WES09 and POSReady 2009: March 13, 2018

Applies to: Windows Embedded Standard 2009Windows Embedded POSReady 2009

Summary


An information disclosure vulnerability exists in the Windows implementation of wireless networking. An attacker who successfully exploits this vulnerability could potentially decrypt wireless traffic of hosts on a WPA or WPA 2-protected wireless network.
To learn more about the vulnerability, see CVE-2017-13077.

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Important 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 Windows Update: FAQ.

Method 2: Microsoft Update Catalog

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

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WES09 and POSReady 2009 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 times for these files are listed in Coordinated Universal Time (UTC). The dates and 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 times may change when you perform certain operations on the files.