Summary

This security update resolves a Microsoft Word remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-40486.

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?)

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: October 12, 2021 (KB5006940).

Security update replacement information

This security update replaces previously released security update 5001949.

File hash information

File name

SHA256 hash

word2016-kb5002004-fullfile-x86-glb.exe

52F9DDDF8AC6622211F22D47D13257DD598E001DC0CABB3FAC41AEC3C738CD46

word2016-kb5002004-fullfile-x64-glb.exe

CA1FB78BB9A1C77439192D9A84AD63E13C4BB7D7E1C4067DCBCFCEB34CD3D53C

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

14-Sep-21

03:52

wwintl.dll_1025

wwintl.dll

16.0.4936.1000

823584

15-Sep-21

04:58

wwintl.dll_1026

wwintl.dll

16.0.4936.1000

820504

15-Sep-21

04:58

wwintl.dll_1029

wwintl.dll

16.0.4936.1000

876320

15-Sep-21

04:58

wwintl.dll_1030

wwintl.dll

16.0.4936.1000

807712

15-Sep-21

04:58

wwintl.dll_1031

wwintl.dll

16.0.4936.1000

888088

15-Sep-21

04:58

wwintl.dll_1032

wwintl.dll

16.0.4936.1000

877856

15-Sep-21

04:58

wwintl.dll_3082

wwintl.dll

16.0.4936.1000

847648

15-Sep-21

04:58

wwintl.dll_1061

wwintl.dll

16.0.4936.1000

770840

15-Sep-21

04:58

wwintl.dll_1035

wwintl.dll

16.0.4936.1000

818464

15-Sep-21

04:58

wwintl.dll_1036

wwintl.dll

16.0.4936.1000

883992

15-Sep-21

04:58

wwintl.dll_1037

wwintl.dll

16.0.4936.1000

762144

15-Sep-21

04:58

wwintl.dll_1081

wwintl.dll

16.0.4936.1000

865056

15-Sep-21

04:58

wwintl.dll_1050

wwintl.dll

16.0.4936.1000

830744

15-Sep-21

04:58

wwintl.dll_1038

wwintl.dll

16.0.4936.1000

886560

15-Sep-21

04:58

wwintl.dll_1057

wwintl.dll

16.0.4936.1000

779040

15-Sep-21

04:58

wwintl.dll_1040

wwintl.dll

16.0.4936.1000

838424

15-Sep-21

04:58

wwintl.dll_1041

wwintl.dll

16.0.4936.1000

790304

15-Sep-21

04:58

wwintl.dll_1087

wwintl.dll

16.0.4936.1000

880408

15-Sep-21

04:58

wwintl.dll_1042

wwintl.dll

16.0.4936.1000

783136

15-Sep-21

04:58

wwintl.dll_1063

wwintl.dll

16.0.4936.1000

836896

15-Sep-21

04:58

wwintl.dll_1062

wwintl.dll

16.0.4936.1000

824608

15-Sep-21

04:59

wwintl.dll_1086

wwintl.dll

16.0.4936.1000

782616

15-Sep-21

04:59

wwintl.dll_1044

wwintl.dll

16.0.4936.1000

797168

15-Sep-21

04:59

wwintl.dll_1043

wwintl.dll

16.0.4936.1000

835872

15-Sep-21

04:59

wwintl.dll_1045

wwintl.dll

16.0.4936.1000

852256

15-Sep-21

04:59

wwintl.dll_1046

wwintl.dll

16.0.4936.1000

853280

15-Sep-21

04:59

wwintl.dll_2070

wwintl.dll

16.0.4936.1000

861464

15-Sep-21

04:59

wwintl.dll_1048

wwintl.dll

16.0.4936.1000

896280

15-Sep-21

04:59

wwintl.dll_1049

wwintl.dll

16.0.4936.1000

809968

15-Sep-21

04:59

wwintl.dll_1051

wwintl.dll

16.0.4936.1000

891160

15-Sep-21

04:59

wwintl.dll_1060

wwintl.dll

16.0.4936.1000

821768

15-Sep-21

04:59

wwintl.dll_2074

wwintl.dll

16.0.4936.1000

817944

15-Sep-21

04:59

wwintl.dll_9242

wwintl.dll

16.0.4936.1000

817952

15-Sep-21

04:59

wwintl.dll_1053

wwintl.dll

16.0.4936.1000

803616

15-Sep-21

04:59

wwintl.dll_1054

wwintl.dll

16.0.4936.1000

825112

15-Sep-21

04:59

wwintl.dll_1055

wwintl.dll

16.0.4936.1000

881952

15-Sep-21

04:59

wwintl.dll_1058

wwintl.dll

16.0.4936.1000

820000

15-Sep-21

04:59

wwintl.dll_1066

wwintl.dll

16.0.4936.1000

912672

15-Sep-21

04:59

wwintl.dll_2052

wwintl.dll

16.0.4936.1000

697120

15-Sep-21

04:59

wwintl.dll_1028

wwintl.dll

16.0.4936.1000

706240

15-Sep-21

04:59

jrpcard20.dll_1041

jrpcard20.dll

16.0.4834.1000

330960

14-Sep-21

03:52

pdfreflow.exe

pdfreflow.exe

16.0.5140.1000

10306344

14-Sep-21

03:50

wwintl.dll_1033

wwintl.dll

16.0.4936.1000

701152

14-Sep-21

03:48

msword.olb

msword.olb

939304

14-Sep-21

03:50

winword.exe

winword.exe

16.0.5227.1000

1937736

15-Sep-21

07:40

wrd12cnv.dll

wordcnv.dll

16.0.5227.1000

9183560

15-Sep-21

07:40

wwlib.dll

wwlib.dll

16.0.5227.1000

29627208

15-Sep-21

07:40

File identifier

File name

File version

File size

Date

Time

calligra.dll

calligra.dll

16.0.4528.1000

338688

15-Sep-21

05:14

genko.dll

genko.dll

16.0.5032.1000

513368

14-Sep-21

03:53

wdsrv.conversion.word.wwintl.dll_1025

wwintl.dll

16.0.5227.1000

944456

15-Sep-21

07:37

wwintl.dll_1025

wwintl.dll

16.0.5227.1000

944456

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1026

wwintl.dll

16.0.5227.1000

899376

15-Sep-21

07:37

wwintl.dll_1026

wwintl.dll

16.0.5227.1000

899376

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1029

wwintl.dll

16.0.5227.1000

955704

15-Sep-21

07:37

wwintl.dll_1029

wwintl.dll

16.0.5227.1000

955704

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1030

wwintl.dll

16.0.5227.1000

886576

15-Sep-21

07:37

wwintl.dll_1030

wwintl.dll

16.0.5227.1000

886576

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1031

wwintl.dll

16.0.5227.1000

966984

15-Sep-21

07:37

wwintl.dll_1031

wwintl.dll

16.0.5227.1000

966984

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1032

wwintl.dll

16.0.5227.1000

956744

15-Sep-21

07:37

wwintl.dll_1032

wwintl.dll

16.0.5227.1000

956744

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_3082

wwintl.dll

16.0.5227.1000

926536

15-Sep-21

07:37

wwintl.dll_3082

wwintl.dll

16.0.5227.1000

926536

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1061

wwintl.dll

16.0.5227.1000

849712

15-Sep-21

07:37

wwintl.dll_1061

wwintl.dll

16.0.5227.1000

849712

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1035

wwintl.dll

16.0.5227.1000

897352

15-Sep-21

07:37

wwintl.dll_1035

wwintl.dll

16.0.5227.1000

897352

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1036

wwintl.dll

16.0.5227.1000

962888

15-Sep-21

07:37

wwintl.dll_1036

wwintl.dll

16.0.5227.1000

962888

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1037

wwintl.dll

16.0.5227.1000

883008

15-Sep-21

07:37

wwintl.dll_1037

wwintl.dll

16.0.5227.1000

883008

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1081

wwintl.dll

16.0.5227.1000

944440

15-Sep-21

07:37

wwintl.dll_1081

wwintl.dll

16.0.5227.1000

944440

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1050

wwintl.dll

16.0.5227.1000

909624

15-Sep-21

07:37

wwintl.dll_1050

wwintl.dll

16.0.5227.1000

909624

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1038

wwintl.dll

16.0.5227.1000

965424

15-Sep-21

07:37

wwintl.dll_1038

wwintl.dll

16.0.5227.1000

965424

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1057

wwintl.dll

16.0.5227.1000

857904

15-Sep-21

07:37

wwintl.dll_1057

wwintl.dll

16.0.5227.1000

857904

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1040

wwintl.dll

16.0.5227.1000

917296

15-Sep-21

07:37

wwintl.dll_1040

wwintl.dll

16.0.5227.1000

917296

15-Sep-21

07:37

wac.word.wwintl.dll_1041

wwintl.dll

16.0.5227.1000

869176

wdsrv.conversion.word.wwintl.dll_1041

wwintl.dll

16.0.5227.1000

869176

15-Sep-21

07:37

wwintl.dll_1041

wwintl.dll

16.0.5227.1000

869176

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1087

wwintl.dll

16.0.5227.1000

959808

15-Sep-21

07:37

wwintl.dll_1087

wwintl.dll

16.0.5227.1000

959808

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1042

wwintl.dll

16.0.5227.1000

862512

15-Sep-21

07:37

wwintl.dll_1042

wwintl.dll

16.0.5227.1000

862512

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1063

wwintl.dll

16.0.5227.1000

916288

15-Sep-21

07:37

wwintl.dll_1063

wwintl.dll

16.0.5227.1000

916288

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1062

wwintl.dll

16.0.5227.1000

903488

15-Sep-21

07:37

wwintl.dll_1062

wwintl.dll

16.0.5227.1000

903488

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1086

wwintl.dll

16.0.5227.1000

862016

15-Sep-21

07:37

wwintl.dll_1086

wwintl.dll

16.0.5227.1000

862016

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1044

wwintl.dll

16.0.5227.1000

875832

15-Sep-21

07:37

wwintl.dll_1044

wwintl.dll

16.0.5227.1000

875832

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1043

wwintl.dll

16.0.5227.1000

915248

15-Sep-21

07:37

wwintl.dll_1043

wwintl.dll

16.0.5227.1000

915248

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1045

wwintl.dll

16.0.5227.1000

931632

15-Sep-21

07:37

wwintl.dll_1045

wwintl.dll

16.0.5227.1000

931632

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1046

wwintl.dll

16.0.5227.1000

932656

15-Sep-21

07:37

wwintl.dll_1046

wwintl.dll

16.0.5227.1000

932656

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_2070

wwintl.dll

16.0.5227.1000

940352

15-Sep-21

07:37

wwintl.dll_2070

wwintl.dll

16.0.5227.1000

940352

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1048

wwintl.dll

16.0.5227.1000

975688

15-Sep-21

07:37

wwintl.dll_1048

wwintl.dll

16.0.5227.1000

975688

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1049

wwintl.dll

16.0.5227.1000

888632

15-Sep-21

07:37

wwintl.dll_1049

wwintl.dll

16.0.5227.1000

888632

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1051

wwintl.dll

16.0.5227.1000

970552

15-Sep-21

07:37

wwintl.dll_1051

wwintl.dll

16.0.5227.1000

970552

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1060

wwintl.dll

16.0.5227.1000

900400

15-Sep-21

07:37

wwintl.dll_1060

wwintl.dll

16.0.5227.1000

900400

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_2074

wwintl.dll

16.0.5227.1000

896840

15-Sep-21

07:37

wwintl.dll_2074

wwintl.dll

16.0.5227.1000

896840

15-Sep-21

07:37

wac.word.wwintl.dll_9242

wwintl.dll

16.0.5227.1000

896840

wdsrv.conversion.word.wwintl.dll_9242

wwintl.dll

16.0.5227.1000

896840

15-Sep-21

07:37

wwintl.dll_9242

wwintl.dll

16.0.5227.1000

896840

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1053

wwintl.dll

16.0.5227.1000

882504

15-Sep-21

07:37

wwintl.dll_1053

wwintl.dll

16.0.5227.1000

882504

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1054

wwintl.dll

16.0.5227.1000

903960

15-Sep-21

07:37

wwintl.dll_1054

wwintl.dll

16.0.5227.1000

903960

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1055

wwintl.dll

16.0.5227.1000

960808

15-Sep-21

07:37

wwintl.dll_1055

wwintl.dll

16.0.5227.1000

960808

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1058

wwintl.dll

16.0.5227.1000

898840

15-Sep-21

07:37

wwintl.dll_1058

wwintl.dll

16.0.5227.1000

898840

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_1066

wwintl.dll

16.0.5227.1000

992040

15-Sep-21

07:37

wwintl.dll_1066

wwintl.dll

16.0.5227.1000

992040

15-Sep-21

07:37

wdsrv.conversion.word.wwintl.dll_2052

wwintl.dll

16.0.5227.1000

775984

15-Sep-21

07:38

wwintl.dll_2052

wwintl.dll

16.0.5227.1000

775984

15-Sep-21

07:38

wdsrv.conversion.word.wwintl.dll_1028

wwintl.dll

16.0.5227.1000

784680

15-Sep-21

07:38

wwintl.dll_1028

wwintl.dll

16.0.5227.1000

784680

15-Sep-21

07:38

jrpcard20.dll_1041

jrpcard20.dll

16.0.4834.1000

331168

14-Sep-21

03:53

pdfreflow.exe

pdfreflow.exe

16.0.5140.1000

15919968

14-Sep-21

03:52

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

14-Sep-21

03:47

wwintl.dll_1033

wwintl.dll

16.0.4936.1000

780488

14-Sep-21

03:47

msword.olb

msword.olb

939304

14-Sep-21

03:52

winword.exe

winword.exe

16.0.5227.1000

1940760

15-Sep-21

07:40

wrd12cnv.dll

wordcnv.dll

16.0.5227.1000

11890968

15-Sep-21

07:40

wwlib.dll

wwlib.dll

16.0.5227.1000

37252392

15-Sep-21

07:40

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