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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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.
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
WES09 and POSReady 2009 file information
File hash information
| File name | SHA1 hash | SHA256 hash |
|---|---|---|
| WindowsXP-KB4089694-x86-Embedded-ENU.exe | F0698BDBB2C0DBAF56D7C4071061046865EC3526 | 794C9E9B730527566004698179C27E14B182082A90F8BF3DBC4DD0CEDC08E305 |
For all supported x86-based versions
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Wzcsvc.dll | 5.1.2600.7432 | 484,352 | 15-Feb-2018 | 00:16 | x86 |
| Updspapi.dll | 6.3.13.0 | 382,840 | 16-May-2014 | 03:08 | x86 |