Description of the security update for Word 2016: October 10, 2017

Applies to: Word 2016


This security update resolves a vulnerability in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2017-11826.

Note To apply this security update, you must have the release version of Microsoft 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.)

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: October 10, 2017.

Security update replacement information

This security update replaces previously released security update KB 3191945.

File hash information

Package Name Package Hash SHA 1 Package Hash SHA 2
word2016-kb4011222-fullfile-x64-glb.exe 94AF3087B240A94A73CE85F9A1F9B3767A809D01 86166AD296ED2189369BFBAE3FB1C09DAE718F91ABF540BE63EB9B03AD0EF463
word2016-kb4011222-fullfile-x86-glb.exe 4C4D0E7681770BD317259B4395CB3A76F92002BF 26BD67B5D6D6C630BF806C9ED019169CD45F252321BAE7F8DF1E68D0BF372C49

File information

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