Description of the security update for Office 2010: September 8, 2020

Summary

This security update resolves a remote code execution vulnerability that exists in Microsoft Excel software if the software does not correctly handle objects in memory. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2020-1193.

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?).

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 4484530 for the 32-bit version of Office 2010
• Download security update 4484530 for the 64-bit version of Office 2010

More information

Security update deployment information

For deployment information about this update, see security update deployment information: September 8, 2020.

Security update replacement information

This security update replaces previously released security update 4484373.

File hash information

File name	SHA1 hash	SHA256 hash
mso2010-kb4484530-fullfile-x86-glb.exe	126C3E697C23D0ED32DBCC1EEDFFB8A074237DFF	5F7EE207A12169D4B35E0BE5C4BEF4824C5C05E00CAAAE651EC6CFDD3802A82E
mso2010-kb4484530-fullfile-x64-glb.exe	6C1C7FC3298679610EF7423884BAAB622EAAB9B1	0FC2094B65E45D284953CA239E98FFE448D1512FCA7977B01BE3FD4D72E734BA

File informationThe 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.

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For all supported x86-based versions of Office 2010

File identifier	File name	File version	File size	Date	Time
mso.dll.x86	mso.dll	14.0.7258.5000	18,428,592	27-Aug-2020	12:58

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For all supported x64-based versions of Office 2010

File identifier	File name	File version	File size	Date	Time
mso.dll.x64	mso.dll	14.0.7258.5000	24,362,160	27-Aug-2020	01:08
mso.dll.x86	mso.dll	14.0.7258.5000	18,428,592	27-Aug-2020	12:58

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