Description of the security update for Outlook 2013: August 11, 2020

Applies to: Microsoft Office 2013 Service Pack 1


This security update resolves a remote code execution vulnerability that exists in Microsoft Outlook when the software does not correctly handle objects in memory. It also resolves an information disclosure vulnerability that exists when attaching files to Outlook messages. To learn more about the vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2020-1483 and Microsoft Common Vulnerabilities and Exposures CVE-2020-1493.

Note To apply this security update, you must have the release version of Service Pack 1 for Microsoft Office 2013 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2013. It doesn't apply to the Office 2013 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 4484363.

File hash information

File name SHA1 hash SHA256 hash
outlook2013-kb4484486-fullfile-x86-glb.exe 4543DCF41A197E66AD29D255FE6B0C738DD3E822 349E7DEFC897E5E3EED2FF974196E02EB99E37DAF718439CCDD8EF167A5C011F
outlook2013-kb4484486-fullfile-x64-glb.exe 7059E247396F4D76708F323FBCC61F4E2F3C780D B30D6171DEF4DD2BFE5C2F5067ED3CD4E9D53C278E979AE69A01CE5F48C7D04F

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