Summary
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker uses the Microsoft Web Distributed Authoring and Versioning (WebDAV) client to send specifically crafted input to a server. To learn more about the vulnerability, see Microsoft Security Bulletin MS16-016.
More Information
Important
-
All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-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 need before you install this update. For more information, see Add language packs to Windows.
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 turn on automatic updating, see Get security updates automatically.Note For Windows RT 8.1, this update is available through Windows Update only.
You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.Click the download link in Microsoft Security Bulletin MS16-016 that corresponds to the version of Windows that you are running.
More Information
Help for installing updates: Support for Microsoft UpdateSecurity solutions for IT professionals: TechNet Security Troubleshooting and SupportHelp for protecting your Windows-based computer from viruses and malware: Virus Solution and Security CenterLocal support according to your country: International Support
File Information
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
|
Windows8.1-KB3124280-x86.msu |
F13F6CF2732B3CB6D32A71E3B164393D59D78926 |
01E5BF2806FCE649A92C73565A35534F196FF64E26727E4ADDFCF65D37F22F98 |
|
Windows8-RT-KB3124280-x64.msu |
060BEE6FBF597334392537EE976376284228147B |
FD2443AED21E695443650874F0800E0FCD830A127C8399AD99B7C1711C26F588 |
|
Windows6.1-KB3124280-x86.msu |
74F39EEDFE561769B1F9B76CDF99A10F5DF5B281 |
AE4A2F287528DF544B4169F096A0298C5FD77A86289C0BFEF405D1E892318BCB |
|
Windows8.1-KB3124280-x64.msu |
757E872B8A05457BC5272BAF244FA18444F2EF5F |
C65045459EF7C1144A19D03B2A65F597A4A7654EC5E5535A5211B59CCC0A3B62 |
|
Windows6.0-KB3124280-x64.msu |
00504E996F0F97D60A88DCF17B82A7379E37E9B4 |
6324CB9C722F0DB3C4155DE881E54C8316A610AAC110B2896BB664CCAA13E964 |
|
Windows6.0-KB3124280-x86.msu |
A913C0D3E23420AB8F2CEA3D92DCCEDAB595BBAB |
06EEF8BDC2F5ED02273D21E6A30B18FE84C9E0B2D8897171D780EE26E9298CCC |
|
Windows6.1-KB3124280-x64.msu |
E0DA5E691CCC01AC5F2139128EA4F5D676D9B367 |
6FB1FA0B1BC5282D1077BD23A18D9B499FDB2197130169EEEFD3646D33029E96 |
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 and Windows Server 2012 R2 file information
Notes
-
The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
Version
Product
Milestone
Service branch
6.3.960 0.17 xxx
Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
RTM
GDR
-
GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
-
The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x86-based versions
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Mrxdav.sys |
6.3.9600.18189 |
124,928 |
06-Jan-2016 |
17:43 |
x86 |
For all supported x64-based versions
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Mrxdav.sys |
6.3.9600.18189 |
140,800 |
06-Jan-2016 |
18:25 |
x64 |
Windows Server 2012 file information
Notes
-
The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
Version
Product
Milestone
Service branch
6.2.920 0.17xxx
Windows Server 2012
RTM
GDR
6.2.920 0.21xxx
Windows Server 2012
RTM
LDR
-
GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
-
The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Mrxdav.sys |
6.2.9200.17619 |
142,336 |
04-Jan-2016 |
05:46 |
x64 |
|
Mrxdav.sys |
6.2.9200.21738 |
142,336 |
04-Jan-2016 |
05:10 |
x64 |
Windows 7 and Windows Server 2008 R2 file information
Notes
-
The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
Version
Product
Milestone
Service branch
6.1.760 1.18xxx
Windows 7 or Windows Server 2008 R2
SP1
GDR
6.1.760 1.23 xxx
Windows 7 or Windows Server 2008 R2
SP1
LDR
-
GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
-
The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x86-based versions
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Davclnt.dll |
6.1.7601.23317 |
87,040 |
07-Jan-2016 |
18:50 |
x86 |
|
Mrxdav.sys |
6.1.7601.19113 |
116,224 |
07-Jan-2016 |
17:35 |
x86 |
|
Mrxdav.sys |
6.1.7601.23317 |
117,248 |
07-Jan-2016 |
17:37 |
x86 |
|
Webclnt.dll |
6.1.7601.23317 |
208,896 |
07-Jan-2016 |
18:59 |
x86 |
For all supported x64-based versions
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Davclnt.dll |
6.1.7601.23317 |
108,544 |
07-Jan-2016 |
19:05 |
x64 |
|
Mrxdav.sys |
6.1.7601.19113 |
141,312 |
07-Jan-2016 |
17:42 |
x64 |
|
Mrxdav.sys |
6.1.7601.23317 |
142,336 |
07-Jan-2016 |
17:49 |
x64 |
|
Webclnt.dll |
6.1.7601.23317 |
263,680 |
07-Jan-2016 |
19:12 |
x64 |
|
Mrxdav.sys |
6.1.7601.19113 |
116,224 |
07-Jan-2016 |
17:35 |
x86 |
|
Mrxdav.sys |
6.1.7601.23317 |
117,248 |
07-Jan-2016 |
17:37 |
x86 |
|
Davclnt.dll |
6.1.7601.23317 |
87,040 |
07-Jan-2016 |
18:50 |
x86 |
|
Webclnt.dll |
6.1.7601.23317 |
208,896 |
07-Jan-2016 |
18:59 |
x86 |
Windows Vista and Windows Server 2008 file information
Notes
-
The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
Version
Product
Milestone
Service branch
6.0.600 2.19xxx
Windows Vista or Windows Server 2008
SP2
GDR
6.0.600 2.23xxx
Windows Vista or Windows Server 2008
SP2
LDR
-
GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
-
The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Mrxdav.sys |
6.0.6002.19576 |
139,776 |
07-Jan-2016 |
15:27 |
x64 |
|
Mrxdav.sys |
6.0.6002.23886 |
139,776 |
07-Jan-2016 |
15:39 |
x64 |
|
Mrxdav.sys |
6.0.6002.19576 |
115,200 |
07-Jan-2016 |
15:18 |
x86 |
|
Mrxdav.sys |
6.0.6002.23886 |
115,200 |
07-Jan-2016 |
15:13 |
x86 |
For all supported x86-based versions
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Mrxdav.sys |
6.0.6002.19576 |
115,200 |
07-Jan-2016 |
15:18 |
x86 |
|
Mrxdav.sys |
6.0.6002.23886 |
115,200 |
07-Jan-2016 |
15:13 |
x86 |
