Description of the security update for Office 2016: September 14, 2021 (KB5001997)

Summary

This security update resolves a Microsoft Office Access connectivity engine remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-38646.

**Note:**To apply this security update, you must have the release version of Microsoft Office 2016 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn’t apply to the Office 2016 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 5001997 for the 32-bit version of Office 2016
• Download security update 5001997 for the 64-bit version of Office 2016

More information

Security update deployment information

For deployment information about this update, see Security update deployment information: September 14, 2021 (KB5005848).

Security update replacement information

This security update replaces previously released security update 4493197.

File hash information

File name		SHA256 hash
ace2016-kb5001997-fullfile-x86-glb.exe		748B06DE7E0C11616647684DFC5047EE979890AA77C8729E53AF263793BADD97
ace2016-kb5001997-fullfile-x64-glb.exe		63BA7EF8949E06AAFADDF58254A89D8D01CDFB1BF16C089AC30EEA22BB4417ED

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.

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For all supported x86-based versions of Office 2016

File identifier	File name	File version	File size	Date	Time
acecore.dll	acecore.dll	16.0.5164.1000	1700720	17-Aug-21	03:40
acacedao.dll	acedao.dll	16.0.5149.1000	448992	17-Aug-21	03:40
acedao.dll	acedao.dll	16.0.5149.1000	448992	17-Aug-21	03:40
aceerr.dll	aceerr.dll	16.0.5095.1000	50088	17-Aug-21	03:40
acees.dll	acees.dll	16.0.5149.1000	646608	17-Aug-21	03:40
aceexch.dll	aceexch.dll	16.0.5095.1000	203200	17-Aug-21	03:40
aceexcl.dll	aceexcl.dll	16.0.5149.1000	409000	17-Aug-21	03:40
aceodbc.dll	aceodbc.dll	16.0.5095.1000	300008	17-Aug-21	03:40
aceoddbs.dll	aceoddbs.dll	16.0.4684.1000	26472	17-Aug-21	03:40
aceoledb.dll	aceoledb.dll	16.0.5164.1000	340400	17-Aug-21	03:40
acetxt.dll	acetxt.dll	16.0.5188.1000	174984	17-Aug-21	03:40
acexbe.dll	acexbe.dll	16.0.5215.1000	230328	18-Aug-21	02:51
expsrv.dll	expsrv.dll	7.1.1108	333184	17-Aug-21	08:11
vbajet32.dll	vbajet32.dll	7.1.1108	17792	17-Aug-21	08:11

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For all supported x64-based versions of Office 2016

File identifier	File name	File version	File size	Date	Time
acecore.dll	acecore.dll	16.0.5164.1000	2293136	17-Aug-21	03:50
acacedao.dll	acedao.dll	16.0.5095.1000	606192	17-Aug-21	03:49
acedao.dll	acedao.dll	16.0.5095.1000	606192	17-Aug-21	03:49
acees.dll	acees.dll	16.0.5095.1000	906192	17-Aug-21	03:50
aceexch.dll	aceexch.dll	16.0.4759.1000	259480	17-Aug-21	03:50
aceexcl.dll	aceexcl.dll	16.0.5095.1000	545696	17-Aug-21	03:50
aceodbc.dll	aceodbc.dll	16.0.4999.1000	352624	17-Aug-21	03:50
aceoddbs.dll	aceoddbs.dll	16.0.4513.1000	28536	17-Aug-21	03:50
aceoledb.dll	aceoledb.dll	16.0.5164.1000	441312	17-Aug-21	03:50
acetxt.dll	acetxt.dll	16.0.5188.1000	213920	17-Aug-21	03:50
acexbe.dll	acexbe.dll	16.0.5215.1000	283560	18-Aug-21	02:53
expsrv.dll	expsrv.dll	7.1.1108	503680	17-Aug-21	08:38
vbajet32.dll	vbajet32.dll	7.1.1108	20864	17-Aug-21	08:38

Information about protection and security

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