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.

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.

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

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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