Sign in with Microsoft
Sign in or create an account.
Hello,
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.

Summary

This security update resolves a Microsoft Word remote code execution vulnerability and Microsoft Office remote code execution vulnerability. To learn more about the vulnerabilities, see the following security advisories:

Note: To apply this security update, you must have the release version of Microsoft Word 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?)

Improvements and fixes

After you install KB 5002457 (but not together with KB 5002498), a cross-update dependency is introduced that prevents Office applications from starting. This update eliminates the dependency and allows the applications to start even if both updates are not installed. However, both updates should be installed to address the original security issue.

Known issues in this security release

  • After this security release is installed, applications might stop responding when users try to activate the embedded package objects. A fix for this issue is now available. To get the fix, see the April 2, 2024, update for Office 2016 (KB5002572).

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 Deployments - Security Update Guide.

Security update replacement information

This security update replaces previously released security update 5002520.

File hash information

File name

SHA256 hash

word2016-kb5002542-fullfile-x86-glb.exe

4AD66324F7C8B04C54C3254AA02E2F9C4891D9A220A5413E8F79C624A46304FE

word2016-kb5002542-fullfile-x64-glb.exe

1C449D0C05F589B1BC48CEFF6EBDD0F6CD8AC9D4FCFEB202EE3455B8DF633732

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

genko.dll

genko.dll

16.0.5032.1000

402264

16-Jan-24

02:20

wwintl.dll_1025

wwintl.dll

16.0.4936.1000

823584

17-Jan-24

03:20

wwintl.dll_1026

wwintl.dll

16.0.4936.1000

820504

17-Jan-24

03:20

wwintl.dll_1029

wwintl.dll

16.0.4936.1000

876320

17-Jan-24

03:20

wwintl.dll_1030

wwintl.dll

16.0.4936.1000

807712

17-Jan-24

03:20

wwintl.dll_1031

wwintl.dll

16.0.4936.1000

888088

17-Jan-24

03:20

wwintl.dll_1032

wwintl.dll

16.0.4936.1000

877856

17-Jan-24

03:20

wwintl.dll_3082

wwintl.dll

16.0.5362.1000

849784

17-Jan-24

03:20

wwintl.dll_1061

wwintl.dll

16.0.4936.1000

770840

17-Jan-24

03:20

wwintl.dll_1035

wwintl.dll

16.0.4936.1000

818464

17-Jan-24

03:20

wwintl.dll_1036

wwintl.dll

16.0.5377.1000

886136

17-Jan-24

03:20

wwintl.dll_1037

wwintl.dll

16.0.4936.1000

762144

17-Jan-24

03:20

wwintl.dll_1081

wwintl.dll

16.0.4936.1000

865056

17-Jan-24

03:20

wwintl.dll_1050

wwintl.dll

16.0.4936.1000

830744

17-Jan-24

03:20

wwintl.dll_1038

wwintl.dll

16.0.4936.1000

886560

17-Jan-24

03:20

wwintl.dll_1057

wwintl.dll

16.0.4936.1000

779040

17-Jan-24

03:20

wwintl.dll_1040

wwintl.dll

16.0.4936.1000

838424

17-Jan-24

03:20

wwintl.dll_1041

wwintl.dll

16.0.5386.1000

792456

17-Jan-24

03:20

wwintl.dll_1087

wwintl.dll

16.0.4936.1000

880408

17-Jan-24

03:20

wwintl.dll_1042

wwintl.dll

16.0.4936.1000

783136

17-Jan-24

03:20

wwintl.dll_1063

wwintl.dll

16.0.4936.1000

836896

17-Jan-24

03:20

wwintl.dll_1062

wwintl.dll

16.0.4936.1000

824608

17-Jan-24

03:20

wwintl.dll_1086

wwintl.dll

16.0.4936.1000

782616

17-Jan-24

03:20

wwintl.dll_1044

wwintl.dll

16.0.4936.1000

797168

17-Jan-24

03:20

wwintl.dll_1043

wwintl.dll

16.0.4936.1000

835872

17-Jan-24

03:20

wwintl.dll_1045

wwintl.dll

16.0.4936.1000

852256

17-Jan-24

03:20

wwintl.dll_1046

wwintl.dll

16.0.4936.1000

853280

17-Jan-24

03:20

wwintl.dll_2070

wwintl.dll

16.0.4936.1000

861464

17-Jan-24

03:20

wwintl.dll_1048

wwintl.dll

16.0.4936.1000

896280

17-Jan-24

03:20

wwintl.dll_1049

wwintl.dll

16.0.4936.1000

809968

17-Jan-24

03:20

wwintl.dll_1051

wwintl.dll

16.0.4936.1000

891160

17-Jan-24

03:20

wwintl.dll_1060

wwintl.dll

16.0.4936.1000

821768

17-Jan-24

03:20

wwintl.dll_2074

wwintl.dll

16.0.4936.1000

817944

17-Jan-24

03:20

wwintl.dll_9242

wwintl.dll

16.0.4936.1000

817952

17-Jan-24

03:20

wwintl.dll_1053

wwintl.dll

16.0.4936.1000

803616

17-Jan-24

03:20

wwintl.dll_1054

wwintl.dll

16.0.4936.1000

825112

17-Jan-24

03:20

wwintl.dll_1055

wwintl.dll

16.0.4936.1000

881952

17-Jan-24

03:20

wwintl.dll_1058

wwintl.dll

16.0.4936.1000

820000

17-Jan-24

03:20

wwintl.dll_1066

wwintl.dll

16.0.4936.1000

912672

17-Jan-24

03:20

wwintl.dll_2052

wwintl.dll

16.0.4936.1000

697120

17-Jan-24

03:20

wwintl.dll_1028

wwintl.dll

16.0.4936.1000

706240

17-Jan-24

03:20

jrpcard20.dll_1041

jrpcard20.dll

16.0.4834.1000

330960

16-Jan-24

02:20

pdfreflow.exe

pdfreflow.exe

16.0.5435.1000

10309032

17-Jan-24

12:50

wwintl.dll_1033

wwintl.dll

16.0.4936.1000

701152

16-Jan-24

02:17

msword.olb

msword.olb

939304

16-Jan-24

02:18

winword.exe

winword.exe

16.0.5435.1000

1940064

17-Jan-24

12:50

wrd12cnv.dll

wordcnv.dll

16.0.5435.1000

9187968

17-Jan-24

12:50

wwlib.dll

wwlib.dll

16.0.5435.1000

29633016

17-Jan-24

12:50

File identifier

File name

File version

File size

Date

Time

calligra.dll

calligra.dll

16.0.4528.1000

338688

17-Jan-24

03:28

genko.dll

genko.dll

16.0.5032.1000

513368

16-Jan-24

02:21

wdsrv.conversion.word.wwintl.dll_1025

wwintl.dll

16.0.5435.1000

946792

17-Jan-24

12:52

wwintl.dll_1025

wwintl.dll

16.0.5435.1000

946792

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1026

wwintl.dll

16.0.5435.1000

901728

17-Jan-24

12:52

wwintl.dll_1026

wwintl.dll

16.0.5435.1000

901728

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1029

wwintl.dll

16.0.5435.1000

958080

17-Jan-24

12:52

wwintl.dll_1029

wwintl.dll

16.0.5435.1000

958080

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1030

wwintl.dll

16.0.5435.1000

888928

17-Jan-24

12:52

wwintl.dll_1030

wwintl.dll

16.0.5435.1000

888928

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1031

wwintl.dll

16.0.5435.1000

969320

17-Jan-24

12:52

wwintl.dll_1031

wwintl.dll

16.0.5435.1000

969320

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1032

wwintl.dll

16.0.5435.1000

959072

17-Jan-24

12:52

wwintl.dll_1032

wwintl.dll

16.0.5435.1000

959072

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_3082

wwintl.dll

16.0.5435.1000

928872

17-Jan-24

12:52

wwintl.dll_3082

wwintl.dll

16.0.5435.1000

928872

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1061

wwintl.dll

16.0.5435.1000

852096

17-Jan-24

12:52

wwintl.dll_1061

wwintl.dll

16.0.5435.1000

852096

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1035

wwintl.dll

16.0.5435.1000

899680

17-Jan-24

12:52

wwintl.dll_1035

wwintl.dll

16.0.5435.1000

899680

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1036

wwintl.dll

16.0.5435.1000

965216

17-Jan-24

12:52

wwintl.dll_1036

wwintl.dll

16.0.5435.1000

965216

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1037

wwintl.dll

16.0.5435.1000

885352

17-Jan-24

12:52

wwintl.dll_1037

wwintl.dll

16.0.5435.1000

885352

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1081

wwintl.dll

16.0.5435.1000

946816

17-Jan-24

12:52

wwintl.dll_1081

wwintl.dll

16.0.5435.1000

946816

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1050

wwintl.dll

16.0.5435.1000

912008

17-Jan-24

12:52

wwintl.dll_1050

wwintl.dll

16.0.5435.1000

912008

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1038

wwintl.dll

16.0.5435.1000

967784

17-Jan-24

12:52

wwintl.dll_1038

wwintl.dll

16.0.5435.1000

967784

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1057

wwintl.dll

16.0.5435.1000

860288

17-Jan-24

12:52

wwintl.dll_1057

wwintl.dll

16.0.5435.1000

860288

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1040

wwintl.dll

16.0.5435.1000

919656

17-Jan-24

12:52

wwintl.dll_1040

wwintl.dll

16.0.5435.1000

919656

17-Jan-24

12:52

wac.word.wwintl.dll_1041

wwintl.dll

16.0.5435.1000

871520

wdsrv.conversion.word.wwintl.dll_1041

wwintl.dll

16.0.5435.1000

871520

17-Jan-24

12:52

wwintl.dll_1041

wwintl.dll

16.0.5435.1000

871520

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1087

wwintl.dll

16.0.5435.1000

962176

17-Jan-24

12:52

wwintl.dll_1087

wwintl.dll

16.0.5435.1000

962176

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1042

wwintl.dll

16.0.5435.1000

864896

17-Jan-24

12:52

wwintl.dll_1042

wwintl.dll

16.0.5435.1000

864896

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1063

wwintl.dll

16.0.5435.1000

918552

17-Jan-24

12:52

wwintl.dll_1063

wwintl.dll

16.0.5435.1000

918552

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1062

wwintl.dll

16.0.5435.1000

905720

17-Jan-24

12:52

wwintl.dll_1062

wwintl.dll

16.0.5435.1000

905720

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1086

wwintl.dll

16.0.5435.1000

864392

17-Jan-24

12:52

wwintl.dll_1086

wwintl.dll

16.0.5435.1000

864392

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1044

wwintl.dll

16.0.5435.1000

877968

17-Jan-24

12:52

wwintl.dll_1044

wwintl.dll

16.0.5435.1000

877968

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1043

wwintl.dll

16.0.5435.1000

917632

17-Jan-24

12:52

wwintl.dll_1043

wwintl.dll

16.0.5435.1000

917632

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1045

wwintl.dll

16.0.5435.1000

933888

17-Jan-24

12:52

wwintl.dll_1045

wwintl.dll

16.0.5435.1000

933888

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1046

wwintl.dll

16.0.5435.1000

934912

17-Jan-24

12:52

wwintl.dll_1046

wwintl.dll

16.0.5435.1000

934912

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_2070

wwintl.dll

16.0.5435.1000

942584

17-Jan-24

12:52

wwintl.dll_2070

wwintl.dll

16.0.5435.1000

942584

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1048

wwintl.dll

16.0.5435.1000

977912

17-Jan-24

12:52

wwintl.dll_1048

wwintl.dll

16.0.5435.1000

977912

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1049

wwintl.dll

16.0.5435.1000

890768

17-Jan-24

12:52

wwintl.dll_1049

wwintl.dll

16.0.5435.1000

890768

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1051

wwintl.dll

16.0.5435.1000

972792

17-Jan-24

12:52

wwintl.dll_1051

wwintl.dll

16.0.5435.1000

972792

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1060

wwintl.dll

16.0.5435.1000

902648

17-Jan-24

12:52

wwintl.dll_1060

wwintl.dll

16.0.5435.1000

902648

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_2074

wwintl.dll

16.0.5435.1000

899200

17-Jan-24

12:52

wwintl.dll_2074

wwintl.dll

16.0.5435.1000

899200

17-Jan-24

12:52

wac.word.wwintl.dll_9242

wwintl.dll

16.0.5435.1000

899064

wdsrv.conversion.word.wwintl.dll_9242

wwintl.dll

16.0.5435.1000

899064

17-Jan-24

12:52

wwintl.dll_9242

wwintl.dll

16.0.5435.1000

899064

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1053

wwintl.dll

16.0.5435.1000

884736

17-Jan-24

12:52

wwintl.dll_1053

wwintl.dll

16.0.5435.1000

884736

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1054

wwintl.dll

16.0.5435.1000

906336

17-Jan-24

12:52

wwintl.dll_1054

wwintl.dll

16.0.5435.1000

906336

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1055

wwintl.dll

16.0.5435.1000

963176

17-Jan-24

12:52

wwintl.dll_1055

wwintl.dll

16.0.5435.1000

963176

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1058

wwintl.dll

16.0.5435.1000

901256

17-Jan-24

12:52

wwintl.dll_1058

wwintl.dll

16.0.5435.1000

901256

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1066

wwintl.dll

16.0.5435.1000

994400

17-Jan-24

12:52

wwintl.dll_1066

wwintl.dll

16.0.5435.1000

994400

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_2052

wwintl.dll

16.0.5435.1000

778344

17-Jan-24

12:52

wwintl.dll_2052

wwintl.dll

16.0.5435.1000

778344

17-Jan-24

12:52

wdsrv.conversion.word.wwintl.dll_1028

wwintl.dll

16.0.5435.1000

787040

17-Jan-24

12:52

wwintl.dll_1028

wwintl.dll

16.0.5435.1000

787040

17-Jan-24

12:52

jrpcard20.dll_1041

jrpcard20.dll

16.0.4834.1000

331168

16-Jan-24

02:21

pdfreflow.exe

pdfreflow.exe

16.0.5435.1000

15923328

17-Jan-24

12:51

wac.word.wwintl.dll_1033

wwintl.dll

16.0.4936.1000

780488

wdsrv.conversion.word.wwintl.dll_1033

wwintl.dll

16.0.4936.1000

780488

16-Jan-24

02:16

wwintl.dll_1033

wwintl.dll

16.0.4936.1000

780488

16-Jan-24

02:16

msword.olb

msword.olb

939304

16-Jan-24

02:19

winword.exe

winword.exe

16.0.5435.1000

1942952

17-Jan-24

12:51

wrd12cnv.dll

wordcnv.dll

16.0.5435.1000

11894672

17-Jan-24

12:51

wwlib.dll

wwlib.dll

16.0.5435.1000

37258128

17-Jan-24

12:51

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security

Change history

The following table summarizes some of the most important changes to this topic.

Date

Description

April 2, 2024

Updated the fix for the known issue in the “Known issues in this security release” section.

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!

×