Description of the security update for Word 2016: December 12, 2017

Applies to: Word 2016


This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures ADV170021.

Note To apply this security update, you must have the release version of Word 2016 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home (see Determining your Office version).

Improvements and fixes

This security update contains improvements and fixes for the following nonsecurity issues:

  • This update improves the performance for style properties in VBA in Word 2016.

  • When you save a document in Track Changes mode, some text is lost from the document.

  • The line spacing is displayed incorrectly when you use OpenType (*.otf) fonts in Word 2016.

  • You cannot set the paragraph ID for the first paragraph in a text box through Word VBA.

  • The text in a cell overlaps after you adjust the width of the column in a table.

  • When you try to activate an OLE object in Word 2016,  the object is unexpectedly activated in a newly opened application.

  • When you create and edit a document that's based on a template that’s located in the Temporary Internet Files folder and then print the document, the trust bar reappears unexpectedly. When you click Enable Editing again, Word crashes.

  • Horizontal lines disappear in Word 2016 when you change the zoom level.

  • When you save a right-to-left Word document as a PDF or XPS file, the line numbers are on the left side of the text instead of the right side.

  • Word 2016 crashes when you open a binary document (*.doc) that contains a Horizontal Line shape.

  • The Arabic decimal separator is displayed as a comma character instead of a period character when you use a Hindi numeral in Office 2016 applications.

  • Word 2016 crashes after you use the navigation pane when the Word application is embedded as an OLE object in another application.

  • Word 2016 crashes when you try to change the grammar options for a legacy grammar checker in Office 2016.

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, 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.

Method 3: Microsoft Download Center

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

More Information

Security update deployment information

For deployment information about this update, see security update deployment information: December 12, 2017.

Security update replacement information

This security update replaces the previously released update KB 4011242.

File hash information

Package Name Package Hash SHA 1 Package Hash SHA 2
word2016-kb4011575-fullfile-x86-glb.exe 09A72261DC2747EE6FBBCE86F73EE726AB2A62FB BB5131346146EF0FC9381564D33C256E3D6C6809016606351235D1D6BDA47DD7
word2016-kb4011575-fullfile-x64-glb.exe 45850C56B58259EBA69566269146E21CE63D2FC4 07DC2F004B2266D9A6A0EC8B17220858C52A47B268FDC4DEADCE9E877E26019F

File information

The English version of this security update has the file attributes (or later file attributes) that are listed in the following table. 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.

For all supported x86-based versions of Word 2016

File identifier File name File version File size Date Time
igx.dll igx.dll 15.0.4981.1000 8990880 16-Nov-17 03:11
oart.dll oart.dll 15.0.4989.1000 14451896 16-Nov-17 03:11
oartodf.dll oartodf.dll 15.0.4981.1000 2139336 16-Nov-17 03:11

For all supported x64-based versions of Word 2016

File identifier File name File version File size Date Time
igx.dll igx.dll 15.0.4981.1000 10372256 16-Nov-17 03:11
xlsrv.ecs.igx.dll igx.dll 15.0.4981.1000 10372256 16-Nov-17 03:11
oart.dll oart.dll 15.0.4989.1000 21243576 16-Nov-17 03:11
xlsrv.ecs.oart.dll oart.dll 15.0.4989.1000 21243576 16-Nov-17 03:11
oartodf.dll oartodf.dll 15.0.4981.1000 3783880 16-Nov-17 03:11
xlsrv.ecs.oartodf.dll oartodf.dll 15.0.4981.1000 3783880 16-Nov-17 03:11

How to get help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: 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

Propose a feature or provide feedback on Office Core: Office User Voice portal