Description of the security update for Office 2013: July 11, 2023 (KB4464506)

Summary

This security update resolves a Microsoft Outlook remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2023-33153.

**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.

• Download security update 4464506 for the 32-bit version of Office 2013
• Download security update 4464506 for the 64-bit version of Office 2013

More information

Security update deployment information

For deployment information about this update, see Deployments - Security Update Guide.

Security update replacement information

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

File hash information

File name		SHA256 hash
outexum2013-kb4464506-fullfile-x86-glb.exe		AF50F73ACEA723573EC946EEFB07DB8E796941AE528AB34F9DBD46734B6F608B
outexum2013-kb4464506-fullfile-x64-glb.exe		7F21178AB0CD30E801D3A0E9BE5E8528A7169D7ED137531F8FDBC359474B336B

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.

__

For all supported x86-based versions of Office 2013

File identifier	File name	File version	File size	Date	Time
umoutlookaddin.dll	umoutlookaddin.dll	15.0.5571.1000	1038808	15-Jun-23	01:29

__

For all supported x64-based versions of Office 2013

File identifier	File name	File version	File size	Date	Time
umoutlookaddin.dll	umoutlookaddin.dll	15.0.5571.1000	1435544	15-Jun-23	01:29

Information about protection and security

Protect yourself online: Windows Security supportLearn how we guard against cyber threats: Microsoft Security