Description of the security update for Office 2016: July 9, 2019

Applies to: Office Professional Plus 2016Office Professional 2016Office Standard 2016


This security update resolves an information disclosure vulnerability that exists if Microsoft Office Javascript does not check the validity of the webpage that is making a request to Office documents. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2019-1109.

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 What version of Office am I using?).

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 standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone 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: July 9, 2019.

Security update replacement information

This security update doesn't replace any previously released update.

File hash information

File name SHA1 hash SHA256 hash
osfclient2016-kb4464534-fullfile-x86-glb.exe 0FAC739C5D8F8C5FA7C3C2CF3AF6AB42AD163D90 8C81A0C6A0620BAF421F8F5D06F475669CCE35F97C785773AF960E8CAACA8631
osfclient2016-kb4464534-fullfile-x64-glb.exe B98C162FF01C9BF060D84D4523271738C091152D BD9740C1381700F085BAFBBBBAECDDCD7A16A45DA68BA5044E4B7F1955B62E74

File information

The English (United States) version of this software update installs files that have the 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.

How to get help and support for this security update

Help for installing updates: Protect yourself online

Help for protecting your Windows-based computer from viruses and malware: Microsoft Security

Local support according to your country: International Support