Description of the security update for Office 2016: April 10, 2018

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 CVE-2018-1028. 

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

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

• When you try to save a file to a symbolic link that’s linked to a Universal Naming Convention (UNC) path, if you have connection issues, you may not be able to save the file. In addition, you may experience data loss and receive an unexpected error message that resembles the following:

  We’re sorry, something went wrong that might make PowerPoint unstable. Please save your presentations and restart PowerPoint. 

• Microsoft Word crashes when you edit multi-selected choices in documents in the backstage of Word. 
• This update adds support for Microsoft Office add-ins that are signed by using catalog signatures in Office 2016.

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.

• Download the security update KB4018328 for the 32-bit version of Office 2016
• Download the security update KB4018328 for the 64-bit version of Office 2016

Security update deployment information

For deployment information about this update, see security update deployment information: April 10, 2018.

Security update replacement information

This security update replaces previously released security update KB 4011686.

File hash information

File information

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

For all supported x86-based versions of Office 2016

For all supported x64-based versions of Office 2016

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

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