MS16-112: Description of the security update for Windows lock screen: September 13, 2016

Summary
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if Windows improperly allows web content to load from the Windows lock screen.

To learn more about the vulnerability, see Microsoft Security Bulletin MS16-112.
More information
Important

  • All future security and non-security updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
  • 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.

Note For Windows RT 8.1, this update is available through Windows Update only.

Method 2: Microsoft Update Catalog

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

Method 3: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in Microsoft Security Bulletin MS16-112 that corresponds to the version of Windows that you are running.
More information

How to obtain help and support for this security update

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support
File Information

File hash information

File nameSHA1 hashSHA256 hash
Windows8.1-KB3178539-x64.msu60A85967F423AC37429757D8FBF7212540DEA922EAB98A9AB742833DD689E07F2C902D81B6F6B09ECF11D21A38CA3B7CA4F2B99A
Windows8.1-KB3178539-x86.msuBCF957A9F18D52C7D6920CCCAF1967CD91DEF40B86E1A36A57CD2FA87B46595A15B29ECEAE31FDBF87DFF71D17DD0B4E542F2A46

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 8.1 and Windows Server 2012 R2 file information

Notes: The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
File nameFile versionFile sizeDateTimePlatform
Pnidui.dll6.3.9600.18437627,20011-Aug-201616:17x64
Pnidui.ptxmlNot applicable1,49522-Aug-201306:47Not applicable
Wwanconn.dll8.1.9600.18437455,68011-Aug-201616:16x64
Wwanmm.dll8.1.9600.184371,156,60811-Aug-201616:26x64
Wwanpref.dll8.1.9600.1741550,68829-Oct-201402:17x64
Wwanui.ptxmlNot applicable3,23722-Aug-201306:58Not applicable
For all supported x86-based versions
File nameFile versionFile sizeDateTimePlatform
Pnidui.dll6.3.9600.18437572,92811-Aug-201615:48x86
Pnidui.ptxmlNot applicable1,49521-Aug-201323:42Not applicable
Wwanconn.dll8.1.9600.18437373,76011-Aug-201615:47x86
Wwanmm.dll8.1.9600.184371,119,23211-Aug-201615:52x86
Wwanpref.dll8.1.9600.1741541,98429-Oct-201401:38x86
Wwanui.ptxmlNot applicable3,23721-Aug-201323:54Not applicable
malicious attacker exploit
Properties

Article ID: 3178539 - Last Review: 11/10/2016 00:42:00 - Revision: 2.0

Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1

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