Summary

This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2021-1715 and Microsoft Common Vulnerabilities and Exposures CVE-2021-1716.

Note To apply this security update, you must have the release version of 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

This security update contains fixes for the following nonsecurity issues:

  • Fixes crashes that occur when you save documents in the .txt format if the documents contain a citation and a math formula.

  • Fixes crashes that can occur in certain unusual circumstances that involve proofing of multi-lingual documents.

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: January 12, 2021.

Security update replacement information

This security update replaces previously released security update 4486719.

File hash information

File name

SHA1 hash

SHA256 hash

word2016-kb4493156-fullfile-x86-glb.exe

3AF9B3ADEEAE7153E57CB221EB9B4DFC94F5030D

C2FC216C182C03281E612928071BFF61D42DA1ABE358319F944348FA3421FA66

word2016-kb4493156-fullfile-x64-glb.exe

66A2A4C57C8B8E0E6DE054075E627536DF69B5D2

93B29BFFF55B5645EC51234D930338BB3CD1E97317792F43CACE4ACBE6F401D8


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

15-Dec-20

06:29

wwintl.dll_1025

wwintl.dll

16.0.4936.1000

823584

16-Dec-20

07:26

wwintl.dll_1026

wwintl.dll

16.0.4936.1000

820504

16-Dec-20

07:26

wwintl.dll_1029

wwintl.dll

16.0.4936.1000

876320

16-Dec-20

07:26

wwintl.dll_1030

wwintl.dll

16.0.4936.1000

807712

16-Dec-20

07:26

wwintl.dll_1031

wwintl.dll

16.0.4936.1000

888088

16-Dec-20

07:26

wwintl.dll_1032

wwintl.dll

16.0.4936.1000

877856

16-Dec-20

07:26

wwintl.dll_3082

wwintl.dll

16.0.4936.1000

847648

16-Dec-20

07:26

wwintl.dll_1061

wwintl.dll

16.0.4936.1000

770840

16-Dec-20

07:26

wwintl.dll_1035

wwintl.dll

16.0.4936.1000

818464

16-Dec-20

07:26

wwintl.dll_1036

wwintl.dll

16.0.4936.1000

883992

16-Dec-20

07:26

wwintl.dll_1037

wwintl.dll

16.0.4936.1000

762144

16-Dec-20

07:26

wwintl.dll_1081

wwintl.dll

16.0.4936.1000

865056

16-Dec-20

07:26

wwintl.dll_1050

wwintl.dll

16.0.4936.1000

830744

16-Dec-20

07:26

wwintl.dll_1038

wwintl.dll

16.0.4936.1000

886560

16-Dec-20

07:26

wwintl.dll_1057

wwintl.dll

16.0.4936.1000

779040

16-Dec-20

07:26

wwintl.dll_1040

wwintl.dll

16.0.4936.1000

838424

16-Dec-20

07:26

wwintl.dll_1041

wwintl.dll

16.0.4936.1000

790304

16-Dec-20

07:26

wwintl.dll_1087

wwintl.dll

16.0.4936.1000

880408

16-Dec-20

07:26

wwintl.dll_1042

wwintl.dll

16.0.4936.1000

783136

16-Dec-20

07:27

wwintl.dll_1063

wwintl.dll

16.0.4936.1000

836896

16-Dec-20

07:27

wwintl.dll_1062

wwintl.dll

16.0.4936.1000

824608

16-Dec-20

07:27

wwintl.dll_1086

wwintl.dll

16.0.4936.1000

782616

16-Dec-20

07:27

wwintl.dll_1044

wwintl.dll

16.0.4936.1000

797168

16-Dec-20

07:27

wwintl.dll_1043

wwintl.dll

16.0.4936.1000

835872

16-Dec-20

07:27

wwintl.dll_1045

wwintl.dll

16.0.4936.1000

852256

16-Dec-20

07:27

wwintl.dll_1046

wwintl.dll

16.0.4936.1000

853280

16-Dec-20

07:27

wwintl.dll_2070

wwintl.dll

16.0.4936.1000

861464

16-Dec-20

07:27

wwintl.dll_1048

wwintl.dll

16.0.4936.1000

896280

16-Dec-20

07:27

wwintl.dll_1049

wwintl.dll

16.0.4936.1000

809968

16-Dec-20

07:27

wwintl.dll_1051

wwintl.dll

16.0.4936.1000

891160

16-Dec-20

07:27

wwintl.dll_1060

wwintl.dll

16.0.4936.1000

821768

16-Dec-20

07:27

wwintl.dll_2074

wwintl.dll

16.0.4936.1000

817944

16-Dec-20

07:27

wwintl.dll_9242

wwintl.dll

16.0.4936.1000

817952

16-Dec-20

07:27

wwintl.dll_1053

wwintl.dll

16.0.4936.1000

803616

16-Dec-20

07:27

wwintl.dll_1054

wwintl.dll

16.0.4936.1000

825112

16-Dec-20

07:27

wwintl.dll_1055

wwintl.dll

16.0.4936.1000

881952

16-Dec-20

07:27

wwintl.dll_1058

wwintl.dll

16.0.4936.1000

820000

16-Dec-20

07:27

wwintl.dll_1066

wwintl.dll

16.0.4936.1000

912672

16-Dec-20

07:27

wwintl.dll_2052

wwintl.dll

16.0.4936.1000

697120

16-Dec-20

07:27

wwintl.dll_1028

wwintl.dll

16.0.4936.1000

706240

16-Dec-20

07:27

jrpcard20.dll_1041

jrpcard20.dll

16.0.4834.1000

330960

15-Dec-20

06:29

pdfreflow.exe

pdfreflow.exe

16.0.5041.1000

10305848

15-Dec-20

06:26

wwintl.dll_1033

wwintl.dll

16.0.4936.1000

701152

15-Dec-20

06:25

msword.olb

msword.olb

939304

15-Dec-20

06:26

winword.exe

winword.exe

16.0.5110.1000

1937712

16-Dec-20

08:14

wrd12cnv.dll

wordcnv.dll

16.0.5110.1000

9183016

16-Dec-20

08:14

wwlib.dll

wwlib.dll

16.0.5110.1000

29627184

16-Dec-20

08:14

File identifier

File name

File version

File size

Date

Time

calligra.dll

calligra.dll

16.0.4528.1000

338688

16-Dec-20

07:43

genko.dll

genko.dll

16.0.5032.1000

513368

15-Dec-20

06:50

wdsrv.conversion.word.wwintl.dll_1025

wwintl.dll

16.0.5110.1000

944432

16-Dec-20

08:10

wwintl.dll_1025

wwintl.dll

16.0.5110.1000

944432

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1026

wwintl.dll

16.0.5110.1000

899376

16-Dec-20

08:10

wwintl.dll_1026

wwintl.dll

16.0.5110.1000

899376

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1029

wwintl.dll

16.0.5110.1000

955688

16-Dec-20

08:10

wwintl.dll_1029

wwintl.dll

16.0.5110.1000

955688

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1030

wwintl.dll

16.0.5110.1000

886576

16-Dec-20

08:10

wwintl.dll_1030

wwintl.dll

16.0.5110.1000

886576

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1031

wwintl.dll

16.0.5110.1000

966960

16-Dec-20

08:10

wwintl.dll_1031

wwintl.dll

16.0.5110.1000

966960

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1032

wwintl.dll

16.0.5110.1000

956720

16-Dec-20

08:10

wwintl.dll_1032

wwintl.dll

16.0.5110.1000

956720

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_3082

wwintl.dll

16.0.5110.1000

926512

16-Dec-20

08:10

wwintl.dll_3082

wwintl.dll

16.0.5110.1000

926512

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1061

wwintl.dll

16.0.5110.1000

849712

16-Dec-20

08:10

wwintl.dll_1061

wwintl.dll

16.0.5110.1000

849712

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1035

wwintl.dll

16.0.5110.1000

897328

16-Dec-20

08:10

wwintl.dll_1035

wwintl.dll

16.0.5110.1000

897328

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1036

wwintl.dll

16.0.5110.1000

962864

16-Dec-20

08:10

wwintl.dll_1036

wwintl.dll

16.0.5110.1000

962864

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1037

wwintl.dll

16.0.5110.1000

882992

16-Dec-20

08:10

wwintl.dll_1037

wwintl.dll

16.0.5110.1000

882992

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1081

wwintl.dll

16.0.5110.1000

944432

16-Dec-20

08:10

wwintl.dll_1081

wwintl.dll

16.0.5110.1000

944432

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1050

wwintl.dll

16.0.5110.1000

909616

16-Dec-20

08:10

wwintl.dll_1050

wwintl.dll

16.0.5110.1000

909616

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1038

wwintl.dll

16.0.5110.1000

965424

16-Dec-20

08:10

wwintl.dll_1038

wwintl.dll

16.0.5110.1000

965424

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1057

wwintl.dll

16.0.5110.1000

857904

16-Dec-20

08:10

wwintl.dll_1057

wwintl.dll

16.0.5110.1000

857904

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1040

wwintl.dll

16.0.5110.1000

917296

16-Dec-20

08:10

wwintl.dll_1040

wwintl.dll

16.0.5110.1000

917296

16-Dec-20

08:10

wac.word.wwintl.dll_1041

wwintl.dll

16.0.5110.1000

869168

wdsrv.conversion.word.wwintl.dll_1041

wwintl.dll

16.0.5110.1000

869168

16-Dec-20

08:10

wwintl.dll_1041

wwintl.dll

16.0.5110.1000

869168

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1087

wwintl.dll

16.0.5110.1000

959792

16-Dec-20

08:10

wwintl.dll_1087

wwintl.dll

16.0.5110.1000

959792

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1042

wwintl.dll

16.0.5110.1000

862512

16-Dec-20

08:10

wwintl.dll_1042

wwintl.dll

16.0.5110.1000

862512

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1063

wwintl.dll

16.0.5110.1000

916272

16-Dec-20

08:10

wwintl.dll_1063

wwintl.dll

16.0.5110.1000

916272

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1062

wwintl.dll

16.0.5110.1000

903472

16-Dec-20

08:10

wwintl.dll_1062

wwintl.dll

16.0.5110.1000

903472

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1086

wwintl.dll

16.0.5110.1000

862000

16-Dec-20

08:10

wwintl.dll_1086

wwintl.dll

16.0.5110.1000

862000

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1044

wwintl.dll

16.0.5110.1000

875824

16-Dec-20

08:10

wwintl.dll_1044

wwintl.dll

16.0.5110.1000

875824

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1043

wwintl.dll

16.0.5110.1000

915240

16-Dec-20

08:10

wwintl.dll_1043

wwintl.dll

16.0.5110.1000

915240

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1045

wwintl.dll

16.0.5110.1000

931624

16-Dec-20

08:10

wwintl.dll_1045

wwintl.dll

16.0.5110.1000

931624

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1046

wwintl.dll

16.0.5110.1000

932656

16-Dec-20

08:10

wwintl.dll_1046

wwintl.dll

16.0.5110.1000

932656

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_2070

wwintl.dll

16.0.5110.1000

940336

16-Dec-20

08:10

wwintl.dll_2070

wwintl.dll

16.0.5110.1000

940336

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1048

wwintl.dll

16.0.5110.1000

975664

16-Dec-20

08:10

wwintl.dll_1048

wwintl.dll

16.0.5110.1000

975664

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1049

wwintl.dll

16.0.5110.1000

888624

16-Dec-20

08:10

wwintl.dll_1049

wwintl.dll

16.0.5110.1000

888624

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1051

wwintl.dll

16.0.5110.1000

970544

16-Dec-20

08:10

wwintl.dll_1051

wwintl.dll

16.0.5110.1000

970544

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_1060

wwintl.dll

16.0.5110.1000

900400

16-Dec-20

08:10

wwintl.dll_1060

wwintl.dll

16.0.5110.1000

900400

16-Dec-20

08:10

wdsrv.conversion.word.wwintl.dll_2074

wwintl.dll

16.0.5110.1000

896816

16-Dec-20

08:11

wwintl.dll_2074

wwintl.dll

16.0.5110.1000

896816

16-Dec-20

08:11

wac.word.wwintl.dll_9242

wwintl.dll

16.0.5110.1000

896816

wdsrv.conversion.word.wwintl.dll_9242

wwintl.dll

16.0.5110.1000

896816

16-Dec-20

08:11

wwintl.dll_9242

wwintl.dll

16.0.5110.1000

896816

16-Dec-20

08:11

wdsrv.conversion.word.wwintl.dll_1053

wwintl.dll

16.0.5110.1000

882480

16-Dec-20

08:11

wwintl.dll_1053

wwintl.dll

16.0.5110.1000

882480

16-Dec-20

08:11

wdsrv.conversion.word.wwintl.dll_1054

wwintl.dll

16.0.5110.1000

903984

16-Dec-20

08:11

wwintl.dll_1054

wwintl.dll

16.0.5110.1000

903984

16-Dec-20

08:11

wdsrv.conversion.word.wwintl.dll_1055

wwintl.dll

16.0.5110.1000

960816

16-Dec-20

08:11

wwintl.dll_1055

wwintl.dll

16.0.5110.1000

960816

16-Dec-20

08:11

wdsrv.conversion.word.wwintl.dll_1058

wwintl.dll

16.0.5110.1000

898864

16-Dec-20

08:11

wwintl.dll_1058

wwintl.dll

16.0.5110.1000

898864

16-Dec-20

08:11

wdsrv.conversion.word.wwintl.dll_1066

wwintl.dll

16.0.5110.1000

992048

16-Dec-20

08:11

wwintl.dll_1066

wwintl.dll

16.0.5110.1000

992048

16-Dec-20

08:11

wdsrv.conversion.word.wwintl.dll_2052

wwintl.dll

16.0.5110.1000

775984

16-Dec-20

08:11

wwintl.dll_2052

wwintl.dll

16.0.5110.1000

775984

16-Dec-20

08:11

wdsrv.conversion.word.wwintl.dll_1028

wwintl.dll

16.0.5110.1000

784688

16-Dec-20

08:11

wwintl.dll_1028

wwintl.dll

16.0.5110.1000

784688

16-Dec-20

08:11

jrpcard20.dll_1041

jrpcard20.dll

16.0.4834.1000

331168

15-Dec-20

06:50

pdfreflow.exe

pdfreflow.exe

16.0.5041.1000

15920456

15-Dec-20

06:48

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

15-Dec-20

06:44

wwintl.dll_1033

wwintl.dll

16.0.4936.1000

780488

15-Dec-20

06:44

msword.olb

msword.olb

939304

15-Dec-20

06:48

winword.exe

winword.exe

16.0.5110.1000

1940784

16-Dec-20

08:13

wrd12cnv.dll

wordcnv.dll

16.0.5110.1000

11889968

16-Dec-20

08:13

wwlib.dll

wwlib.dll

16.0.5110.1000

37252400

16-Dec-20

08:13

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