Description of the security update for Excel 2016: June 9, 2020

Applies to: Excel 2016


This security update resolves a remote code execution vulnerability that exists in Microsoft Excel software if the software does not correctly handle objects in memory. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2020-1225 and Microsoft Common Vulnerabilities and Exposures CVE-2020-1226.

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

Improvements and fixes

This security update contains fixes for the following nonsecurity issues:
  • Excel crashes when you switch between two workbooks that have different zoom level. For example, this issue occurs if the workbooks are in page layout.
  • You get an out-of-memory error message when you run CopyFromRecordset to import data into Excel. This issue occasionally occurs for certain kinds of data after CopyFromRecordset is called repeatedly.

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: June 9, 2020.

Security update replacement information

This security update replaces previously released security update 4484338.

File hash information

File name SHA1 hash SHA256 hash
excel2016-kb4484403-fullfile-x86-glb.exe F650BADD0471B2D506FE9F8FA31F6EC595523ACA 29B49BC1E2EB01519069504BECD512A19DFD07175E95BE5B663699242F58A499
excel2016-kb4484403-fullfile-x64-glb.exe F650BADD0471B2D506FE9F8FA31F6EC595523ACA 44E3780A4BB4251AAD1B6D250068F9A4DC351788351737A5EDCF084FC1B74752

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