Description of the security update for Office 2016: August 11, 2020

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


This security update resolves a remote code execution vulnerability that exists in Microsoft Access software if the software does not correctly handle objects in memory. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2020-1563.

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: August 11, 2020.

Security update replacement information

This security update replaces previously released security update 4484287.

File hash information

File name SHA1 hash SHA256 hash
ace2016-kb4484431-fullfile-x86-glb.exe 475956EF49E4DEB21754FD01BAF821800E9AF5BF 5F06D80BA2C6F62E45BE7737FF246C8D4D822E08C8331BFAD0682F5317C19C4E
ace2016-kb4484431-fullfile-x64-glb.exe 3915C0F675C9B62CD7F866C1D70833907265B32C B883115327AA05EC90D0D70F62185F0627C7234CBAD295B667F09C5EF109AA80

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.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security