Summary

This security update resolves a remote code execution vulnerability that exists if Microsoft Office incorrectly loads arbitrary type libraries. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2020-0760.

Note To apply this security update, you must have the release version of Service Pack 2 for Office 2010 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2010. It doesn't apply to the Office 2010 Click-to-Run editions, such as Microsoft Office 2010 Home and Student (see What version of Office am I using?).

Known issues

Some types of Visual Basic for Applications (VBA) references might be affected by this update. For more information, see FAQ for VBA solutions affected by April 2020 Office security updates.

Note This change in behavior is caused by a design change in Office. The new behavior is by design. Therefore, a fix is not necessary and no mitigation will be provided.

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: April 14, 2020.

Security update replacement information

This security update replaces previously released security update 4464566.

File hash information

File name

SHA1 hash

SHA256 hash

mso2010-kb4484126-fullfile-x64-glb.exe

CDE6E7F70F79F1DB01D33D403CB7AD1C7E07D268

FA20CF83682610EA59629BD6DB0C172F0E2627801C82189044A7910F4C9EEAF5

mso2010-kb4484126-fullfile-x86-glb.exe

D335A46E681CD576DB94C2B44CB6B801079C2A9D

4368104FFA37972F6880828511FB6040D4D9553BE66172FE1E326A06B1407CBC


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.

File identifier

File name

File version

File size

Date

Time

mso.dll.x86

mso.dll

14.0.7248.5000

18,460,856

26-Mar-2020

06:15

File identifier

File name

File version

File size

Date

Time

mso.dll.x64

mso.dll

14.0.7248.5000

24,361,656

26-Mar-2020

07:50

mso.dll.x86

mso.dll

14.0.7248.5000

18,460,856

26-Mar-2020

06:15

Information about protection and security

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