Description of the security update for Office 2010: August 14, 2018

Applies to: Microsoft Office 2010 Service Pack 2


This security update resolves vulnerabilities in Microsoft Office that could allow information disclosure if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8378.

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 365 Home (see Determining your Office version).

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 stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Known issues in this security update

After you install this security update, Word 2010 may crash. To resolve this problem, install the December 4, 2018, update for Office 2010 (KB4227172).

More Information

Security update deployment information

For deployment information about this update, see security update deployment information: August 14, 2018.

Security update replacement information

This security update replaces previously released security update KB 4022137.

File hash information

File name SHA1 hash SHA256 hash
mso2010-kb4022198-fullfile-x86-glb.exe ED690789F2209882ED8AE069059BAD8C81C71179 3272FBDC5CDB942875CBFEA5018CE4E99739500153EE5C2EE6421B4104974034
mso2010-kb4022198-fullfile-x64-glb.exe BB8AD2960AD89E1196A15BE00EB3D0265404642B 375091950E5BB7A7FFBCF47A8E67260013BAF9F54CE9AB26D64AC07D3DC44D47

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. 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 2010

File identifier File name File version File size Date Time
mso.dll.x86 mso.dll 14.0.7212.5000 18,652,184 31-Jul-2018 05:01

For all supported x64-based versions of Office 2010

File identifier File name File version File size Date Time
mso.dll.x64 mso.dll 14.0.7212.5000 24,347,352 31-Jul-2018 05:12
mso.dll.x86 mso.dll 14.0.7212.5000 18,652,184 31-Jul-2018 05:01

How to get help and support for this security update

Help for installing updates: Windows Update: FAQ

Security solutions for IT professionals: TechNet Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support