Description of the security update for Outlook 2013: October 13, 2020

Applies to: Microsoft Office 2013 Service Pack 1


This security update resolves a denial of service vulnerability that exists in Microsoft Exchange Server software when the software fails to properly handle objects in memory. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2020-16949.

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: October 13, 2020.

Security update replacement information

This security update replaces previously released security update 4484486.

File hash information

File name SHA1 hash SHA256 hash
outlook2013-kb4484524-fullfile-x86-glb.exe B2E6468EFF89D7CC2CDE050AF4DECF36FBDE2223 CDCD9587158252B4B5CE38ED0AEEE5C15A35755E14C269B942BE86C05E9A3A7D
outlook2013-kb4484524-fullfile-x64-glb.exe D984F306CB75F94A64BEAABF5DD9F0113BE34960 4F71F6230A7F8FE322D682F44B8C0AF24DE328710A0620D532371D98DEE88358

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