Summary
This security update resolves vulnerabilities in Adobe Flash Player if it's installed on any supported edition of Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows 10, Windows 10 Version 1511, Windows 10 Version 1607, Windows 8.1, or Windows RT 8.1.
To learn more about the vulnerability, see ADV170006.
More Information
Important
-
All future security and nonsecurity updates for Windows Server 2012 R2, Windows 8.1, and Windows RT 8.1 require the installation of update 2919355. We recommend that you install update 2919355 on your Windows Server 2012 R2-based, Windows 8.1-based, or Windows RT 8.1-based computer so that you receive future updates.
-
If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you require before you install this update. For more information, see Add language packs to Windows.
-
This update applies to the Windows operating systems that are listed in the "Applies to" section in this article. If you want to install Adobe Flash Player update on an earlier version of Windows, try Adobe Flash Player download.
Deployment information
For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:
Security update deployment information: May 9, 2017
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How to obtain and install the update
Method 1: Windows Update
This update is available through Windows 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.
Note For Windows RT 8.1, this update is available through Windows Update only.
Method 2: Microsoft Update Catalog
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
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Detection and deployment
Security Central
You can manage the software and security updates that you have to deploy to the servers, desktops, and mobile systems in your organization. For more information, see the TechNet Update Management Center. The
Microsoft TechNet Security website provides more information about security in Microsoft products.
You can download security updates from the Microsoft Update Catalog. The Microsoft Update Catalog provides a searchable catalog of content that is made available through Windows Update and Microsoft Update. This includes security updates, drivers, and service packs. For more information about the Microsoft Update Catalog, see the Microsoft Update Catalog FAQ.
Detection and deployment guidance
Microsoft provides detection and deployment guidance for security updates. This guidance contains recommendations and information that can help IT professionals understand how to use various tools for detection and deployment of security updates. For more information, see Microsoft Knowledge Base article 961747.
Microsoft Baseline Security Analyzer
Microsoft Baseline Security Analyzer (MBSA) lets administrators scan local and remote systems for missing security updates and common security misconfigurations. For more information, see Microsoft Baseline Security Analyzer.
Note Customers who use legacy software that is not supported by the latest release of MBSA, Microsoft Update, or Windows Server Update Services should see the "Legacy Product Support" section of Microsoft Baseline Security Analyzer. Here, you can find information about how to create comprehensive security update detection by using legacy tools.
Windows Server Update Services Windows Server Update Services (WSUS) lets information technology administrators deploy the latest Microsoft product updates to computers that are running Windows. For more information about how to deploy security updates by using Windows Server Update Services, see the following Microsoft TechNet topic:
Windows Server Update Services
Systems Management Server
The following table provides the Microsoft Systems Management Server (SMS) detection and deployment summary for this security update.
|
Software |
SMS 2003 with ITMU |
System Center Configuration Manager |
|---|---|---|
|
Windows 8.1 for 32-bit systems |
No |
Yes |
|
Windows 8.1 for 64-bit systems |
No |
Yes |
|
Windows Server 2012 and Windows Server 2012 R2 |
No |
Yes |
Note Microsoft discontinued support for SMS 2.0 on April 12, 2011. For SMS 2003, Microsoft also discontinued support for the Security Update Inventory Tool (SUIT) on April 12, 2011. Customers are encouraged to upgrade to System Center Configuration Manager.
For SMS 2003, the SMS 2003 Inventory Tool for Microsoft Updates (ITMU) can be used by SMS to detect security updates that are supported by Windows Server Update Services. For more information, see Systems Management Server 2003.
System Center Configuration Manager uses WSUS 3.0 to detect updates. For more information, see System Center.
For more detailed information, see Microsoft Knowledge Base article 910723: Summary list of monthly detection and deployment guidance articles.
Update Compatibility Evaluator and Application Compatibility Toolkit
Updates frequently write to the same files and registry settings that are required for your applications to run. This can trigger incompatibilities and increase the time that is required to deploy security updates. You can streamline the testing and validation of Windows updates against installed applications by using the Update Compatibility Evaluator components that are included in the Application Compatibility Toolkit (ACT).
The Application Compatibility Toolkit contains the necessary tools and documentation to evaluate and decrease application compatibility issues before you deploy a Windows update, a Microsoft security update, or a new version of Windows Internet Explorer in your environment.
Windows Server 2012 File Information
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
|
Windows8-RT-KB4020821-X64.msu |
AE656B34B15996003E6EA26B9A97B7F34C942919 |
CC4ABBD3F887E640344E4E89D3F8646A4D665C0E50E7FF67977D0EF667626E38 |
File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows Server 2012 file information
Â
Note:Â The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
160,734 |
28-Apr-2017 |
22:47 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
28,249,048 |
28-Apr-2017 |
22:47 |
x64 |
|
Flashutil_activex.dll |
25.0.0.171 |
702,936 |
28-Apr-2017 |
22:47 |
x64 |
|
Flashutil_activex.exe |
25.0.0.171 |
973,784 |
28-Apr-2017 |
22:47 |
x64 |
|
Activex.vch |
Not applicable |
737,950 |
28-Apr-2017 |
22:47 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,805,528 |
28-Apr-2017 |
22:47 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,040 |
28-Apr-2017 |
22:47 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,120 |
28-Apr-2017 |
22:47 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
619,480 |
28-Apr-2017 |
22:47 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,256 |
28-Apr-2017 |
22:47 |
x86 |
Windows 8.1 and Windows Server 2012 R2 File Information
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
|
Windows8.1-KB4020821-X64.msu |
E75817F6D9D75107704002FF9C5BF643A32ADFEA |
64B67642E06E28B6EFB3556AD40C6D5707BB6DC3077FD86E49FE4E81626F106D |
|
Windows8.1-KB4020821-ARM.msu |
68962F2183A60F523511ABAE2B1166F9CC814454 |
62CF06F3A5953E138D62C4DB6761618BF54F1B4EBF069CE90C4BDBBE216972AB |
|
Windows8.1-KB4020821-X86.msu |
3723CF7FBE046BFC5F4F37ABA91ABA54E3C66668 |
B374A057C19F7E3DF2EC69BFE90FB95FA59BFEA4179BFFDEA095EF95D7DC06AE |
File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2 file information
Note:Â The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
160,734 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
28,249,592 |
28-Apr-2017 |
22:44 |
x64 |
|
Flashutil_activex.dll |
25.0.0.171 |
703,480 |
28-Apr-2017 |
22:44 |
x64 |
|
Flashutil_activex.exe |
25.0.0.171 |
974,328 |
28-Apr-2017 |
22:44 |
x64 |
|
Activex.vch |
Not applicable |
737,950 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
28-Apr-2017 |
22:44 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
28-Apr-2017 |
22:44 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
28-Apr-2017 |
22:44 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
28-Apr-2017 |
22:44 |
x86 |
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Flash.ocx |
25.0.0.171 |
18,784,248 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flashplayerapp.exe |
25.0.0.171 |
814,584 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flashplayercplapp.cpl |
25.0.0.171 |
163,320 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
545,784 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flashutil_activex.exe |
25.0.0.171 |
833,016 |
28-Apr-2017 |
22:44 |
Not applicable |
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
737,950 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
28-Apr-2017 |
22:44 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
28-Apr-2017 |
22:44 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
28-Apr-2017 |
22:44 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
28-Apr-2017 |
22:44 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
28-Apr-2017 |
22:44 |
x86 |
Windows 10 RTM File Information
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
|
Windows10.0-KB4020821-X64.msu |
78BE6D335926F66544F7D4A3A3E024962F6DF2C9 |
E2C6A138ACB35EA4D8F700CB3420AB9330F80E63328F2CC0932BAA5050597B3A |
|
Windows10.0-KB4020821-X86.msu |
643F7F77016AB870F0EBDD038E7058B869F5AE3C |
806FDB95EB42F1DA4F4926EDFB0A4083A2C65653BADAF095EBCEB1F19C9E88F5 |
File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows 10 file information
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
160,734 |
29-Apr-2017 |
00:39 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
28,249,592 |
29-Apr-2017 |
00:39 |
x64 |
|
Flashutil_activex.dll |
25.0.0.171 |
703,480 |
29-Apr-2017 |
00:39 |
x64 |
|
Flashutil_activex.exe |
25.0.0.171 |
974,328 |
29-Apr-2017 |
00:39 |
x64 |
|
Activex.vch |
Not applicable |
737,950 |
29-Apr-2017 |
00:39 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
29-Apr-2017 |
00:39 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
29-Apr-2017 |
00:39 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
29-Apr-2017 |
00:39 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
29-Apr-2017 |
00:39 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
29-Apr-2017 |
00:39 |
x86 |
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
737,950 |
29-Apr-2017 |
00:39 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
29-Apr-2017 |
00:39 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
29-Apr-2017 |
00:39 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
29-Apr-2017 |
00:39 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
29-Apr-2017 |
00:39 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
29-Apr-2017 |
00:39 |
x86 |
Windows 10 Version 1511 File Information
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
|
Windows10.0-KB4020821-x64.msu |
B806AE9FBD43F3B5272931B4924571DFC0DC48CF |
B24F0FF5EF02F7C8BF4E3D88C2DC46F6393204629FC0C2EFA9C3E81A73F6CBEF |
|
Windows10.0-KB4020821-x86.msu |
13FF7897ADA444F0975D56C8C7D09A1728D638EA |
D1C5672DB44B57328198D6057B4989AC1E5F3D86EC29578376E8D7EFB06126DE |
File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows 10 file information
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
160,734 |
29-Apr-2017 |
00:51 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
28,249,592 |
29-Apr-2017 |
00:51 |
x64 |
|
Flashutil_activex.dll |
25.0.0.171 |
703,480 |
29-Apr-2017 |
00:51 |
x64 |
|
Flashutil_activex.exe |
25.0.0.171 |
974,328 |
29-Apr-2017 |
00:51 |
x64 |
|
Activex.vch |
Not applicable |
737,950 |
29-Apr-2017 |
00:51 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
29-Apr-2017 |
00:51 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
29-Apr-2017 |
00:51 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
29-Apr-2017 |
00:51 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
29-Apr-2017 |
00:51 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
29-Apr-2017 |
00:51 |
x86 |
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
737,950 |
29-Apr-2017 |
00:51 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
29-Apr-2017 |
00:51 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
29-Apr-2017 |
00:51 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
29-Apr-2017 |
00:51 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
29-Apr-2017 |
00:51 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
29-Apr-2017 |
00:51 |
x86 |
Windows 10 Version 1607 and Windows Server 2016 File Information
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
|
Windows10.0-KB4020821-X64.msu |
F4D359A20B707CE63CF20539C451173C4D4CE1D1 |
14B9B47FD9646B0282A6D49BAF8EB7F17EE1CB56A0BD54C9CA480FD837E58518 |
|
Windows10.0-KB4020821-X86.msu |
3126982EA147183296220D5BAC1F051455B0E3BB |
032D91F2088B75E273DE832C4A4F566EF80F8124B85337B3917123B883B72223 |
File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows 10 file information
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
160,734 |
29-Apr-2017 |
00:59 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
28,249,592 |
29-Apr-2017 |
00:59 |
x64 |
|
Flashutil_activex.dll |
25.0.0.171 |
703,480 |
29-Apr-2017 |
00:59 |
x64 |
|
Flashutil_activex.exe |
25.0.0.171 |
974,328 |
29-Apr-2017 |
00:59 |
x64 |
|
Activex.vch |
Not applicable |
737,950 |
29-Apr-2017 |
00:59 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
29-Apr-2017 |
00:59 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
29-Apr-2017 |
00:59 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
29-Apr-2017 |
00:59 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
29-Apr-2017 |
00:59 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
29-Apr-2017 |
00:59 |
x86 |
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
737,950 |
29-Apr-2017 |
00:59 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
29-Apr-2017 |
00:59 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
29-Apr-2017 |
00:59 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
29-Apr-2017 |
00:59 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
29-Apr-2017 |
00:59 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
29-Apr-2017 |
00:59 |
x86 |
Windows 10 Version 1703 File Information
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
|
Windows10.0-KB4020821-X64.msu |
F864406D91F9C5DED327A3690C3FF000248F9EAB |
668F67B4800EEFD31D9EA1A0CABC6C7A852B00C58A5431001CC1ACFB072E81A6 |
|
Windows10.0-KB4020821-X86.msu |
AE35AC7B47C47508ABF580A544DC2F5D9BB7426B |
B325A8956FAEE60AB2B30D623EC4830CED324CFCC7D27CCFF92359EAE6FF31C6 |
File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows 10 file information
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
160,734 |
29-Apr-2017 |
01:05 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
28,249,592 |
29-Apr-2017 |
01:05 |
x64 |
|
Flashutil_activex.dll |
25.0.0.171 |
703,480 |
29-Apr-2017 |
01:05 |
x64 |
|
Flashutil_activex.exe |
25.0.0.171 |
974,328 |
29-Apr-2017 |
01:05 |
x64 |
|
Activex.vch |
Not applicable |
737,950 |
29-Apr-2017 |
01:05 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
29-Apr-2017 |
01:05 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
29-Apr-2017 |
01:05 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
29-Apr-2017 |
01:05 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
29-Apr-2017 |
01:05 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
29-Apr-2017 |
01:05 |
x86 |
|
File name |
File version |
File size |
Date |
Time |
Platform |
|
Activex.vch |
Not applicable |
737,950 |
29-Apr-2017 |
01:05 |
Not applicable |
|
Flash.ocx |
25.0.0.171 |
21,806,072 |
29-Apr-2017 |
01:05 |
x86 |
|
Flashplayerapp.exe |
25.0.0.171 |
835,576 |
29-Apr-2017 |
01:05 |
x86 |
|
Flashplayercplapp.cpl |
25.0.0.171 |
177,656 |
29-Apr-2017 |
01:05 |
Not applicable |
|
Flashutil_activex.dll |
25.0.0.171 |
620,024 |
29-Apr-2017 |
01:05 |
x86 |
|
Flashutil_activex.exe |
25.0.0.171 |
1,356,792 |
29-Apr-2017 |
01:05 |
x86 |
