Lucene search

K
mskbMicrosoftKB5001401
HistoryMar 03, 2021 - 12:00 a.m.

KB5001401: Servicing stack update for Windows Server 2012: April 13, 2021

2021-03-0300:00:00
Microsoft
support.microsoft.com
98

4.6 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

6.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.6%

KB5001401: Servicing stack update for Windows Server 2012: April 13, 2021

This update applies to the following:

  • Windows Server 2012 for x86-based systems
  • Windows Server 2012 for x64-based systems
  • Windows Server 2012 (Server Core installation)

Summary

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.This update also addresses an issue that might prevent the CVE-2020-0689 update from installing. The error message in the CBS.log file is TRUST_E_NOSIGNATURE. To learn more about this security vulnerability, see CVE-2020-0689 | Microsoft Secure Boot Security Feature Bypass Vulnerability.

How to get this update

Method 1: Windows Update

This update is available through Windows Update. It will be downloaded and installed automatically.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Windows Server Update Services

This update is also available through Windows Server Update Services (WSUS).

Prerequisites

There are no prerequisites to apply this update.

Restart information

You don’t have to restart your computer after you apply this update.

Removal information

Servicing stack updates (SSUs) make changes to how updates are installed and cannot be uninstalled from the device.

Update replacement information

This update replaces the previously released update KB4566426.

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.NoteThe MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

__

For all supported x86-based versions

File name File version Date Time File size
CbsApi.dll 6.2.9200.16384 25-Jul-2012 20:18 20,480
mofinstall.dll 6.2.9200.23320 4-Mar-2021 15:01 61,440
esscli.dll 6.2.9200.16384 25-Jul-2012 20:19 283,648
mofd.dll 6.2.9200.23320 4-Mar-2021 15:01 196,608
repdrvfs.dll 6.2.9200.16384 25-Jul-2012 20:19 274,944
fastprox.dll 6.2.9200.22865 17-Aug-2019 9:15 629,248
wbemcomn.dll 6.2.9200.21193 8-Aug-2014 23:36 380,928
wbemcore.dll 6.2.9200.23320 4-Mar-2021 15:01 924,672
wmiutils.dll 6.2.9200.16384 25-Jul-2012 20:19 88,576
wbemprox.dll 6.2.9200.16384 25-Jul-2012 20:19 28,160
wmicmiplugin.dll 6.2.9200.23320 4-Mar-2021 15:01 396,288
sppinst.dll 6.2.9200.21193 8-Aug-2014 23:36 518,656
cmifw.dll 6.2.9200.23320 4-Mar-2021 15:01 73,728
FirewallOfflineAPI.dll 6.2.9200.16384 25-Jul-2012 20:18 181,760
securebootai.dll 6.2.9200.23320 4-Mar-2021 15:01 39,936
winsockai.dll 6.2.9200.23320 4-Mar-2021 15:01 64,512
ws2_helper.dll 6.2.9200.16384 25-Jul-2012 20:20 48,128
httpai.dll 6.2.9200.23320 4-Mar-2021 15:01 53,760
peerdistai.dll 6.2.9200.23320 4-Mar-2021 15:01 66,048
PrintAdvancedInstaller.dll 6.2.9200.23320 4-Mar-2021 15:01 72,704
msdtcadvancedinstaller.dll 6.2.9200.23320 4-Mar-2021 15:01 200,704
cleanupai.dll 6.2.9200.23320 4-Mar-2021 15:01 36,352
wdscore.dll 6.2.9200.22865 17-Aug-2019 9:15 225,792
CntrtextInstaller.dll 6.2.9200.23320 4-Mar-2021 15:01 139,776
drvstore.dll 6.2.9200.23060 14-May-2020 21:38 549,376
dpx.dll 6.2.9200.22865 17-Aug-2019 9:15 250,368
msdelta.dll 6.2.9200.23320 4-Mar-2021 15:01 310,784
mspatcha.dll 6.2.9200.16384 25-Jul-2012 20:19 38,912
PkgMgr.exe 6.2.9200.22865 17-Aug-2019 9:15 194,048
cmiv2.dll 6.2.9200.23320 4-Mar-2021 15:01 2,165,248
cmitrust.dll 6.2.9200.23320 4-Mar-2021 15:01 289,792
WcmTypes.xsd Not versioned 2-Jun-2012 7:54 1,047
CbsMsg.dll 6.2.9200.16384 25-Jul-2012 20:18 41,472
CbsCore.dll 6.2.9200.23320 4-Mar-2021 15:01 1,008,128
TiWorker.exe 6.2.9200.21193 8-Aug-2014 23:37 186,880
TiFileFetcher.exe 6.2.9200.23060 14-May-2020 21:38 380,928
DrUpdate.dll 6.2.9200.23060 14-May-2020 21:38 193,024
wrpint.dll 6.2.9200.21193 8-Aug-2014 23:36 48,640
wcp.dll 6.2.9200.23320 4-Mar-2021 15:01 2,187,776
cmiadapter.dll 6.2.9200.23320 4-Mar-2021 15:01 104,448
smiengine.dll 6.2.9200.23320 4-Mar-2021 15:01 700,928
smipi.dll 6.2.9200.22865 17-Aug-2019 9:15 102,400
poqexec.exe 6.2.9200.22903 11-Oct-2019 8:17 132,608
x86_installed Not versioned 2-Jun-2012 7:32 9
cmipnpinstall.dll 6.2.9200.23320 4-Mar-2021 15:01 191,488
bfsvc.dll 6.2.9200.23320 4-Mar-2021 15:01 91,136
netfxconfig.dll 6.2.9200.23320 4-Mar-2021 15:01 40,448
timezoneai.dll 6.2.9200.23320 4-Mar-2021 15:01 67,584
ConfigureIEOptionalComponentsAI.dll 6.2.9200.23320 4-Mar-2021 15:01 69,632
IEFileInstallAI.dll 6.2.9200.23320 4-Mar-2021 15:01 59,904
GlobalInstallOrder.xml Not versioned 2-Jun-2012 13:26 2,240,509
servicemodelregai.dll 6.2.9200.23320 4-Mar-2021 15:01 96,768
SetIEInstalledDateAI.dll 6.2.9200.23320 4-Mar-2021 15:01 41,984
ceipfwdai.dll 6.2.9200.23320 4-Mar-2021 15:01 180,736
luainstall.dll 6.2.9200.23320 4-Mar-2021 15:01 39,424
bcdeditai.dll 6.2.9200.23320 4-Mar-2021 15:01 285,184
appxreg.dll 6.2.9200.23320 4-Mar-2021 15:01 22,016
fveupdateai.dll 6.2.9200.23320 4-Mar-2021 15:01 56,320
RegisterIEPKeysAI.dll 6.2.9200.23320 4-Mar-2021 15:01 24,576
TrustedInstaller.exe 6.2.9200.21193 8-Aug-2014 23:37 85,504

__

For all supported x64-based versions

File name File version Date Time File size
CbsApi.dll 6.2.9200.16384 25-Jul-2012 20:05 23,040
mofinstall.dll 6.2.9200.23320 4-Mar-2021 15:57 71,168
esscli.dll 6.2.9200.22865 17-Aug-2019 10:10 385,024
mofd.dll 6.2.9200.23320 4-Mar-2021 15:57 259,584
repdrvfs.dll 6.2.9200.16384 25-Jul-2012 20:07 366,080
fastprox.dll 6.2.9200.22865 17-Aug-2019 10:10 816,640
wbemcomn.dll 6.2.9200.23320 4-Mar-2021 15:57 462,336
wbemcore.dll 6.2.9200.23320 4-Mar-2021 15:57 1,207,296
wmiutils.dll 6.2.9200.16384 25-Jul-2012 20:07 115,712
wbemprox.dll 6.2.9200.16384 25-Jul-2012 20:07 35,840
wmicmiplugin.dll 6.2.9200.23320 4-Mar-2021 15:57 556,544
sppinst.dll 6.2.9200.21193 8-Aug-2014 23:56 641,024
cmifw.dll 6.2.9200.23320 4-Mar-2021 15:57 89,088
FirewallOfflineAPI.dll 6.2.9200.16384 25-Jul-2012 20:05 211,968
appserverai.dll 6.2.9200.23320 4-Mar-2021 15:57 135,680
RDWebAI.dll 6.2.9200.23320 4-Mar-2021 15:57 126,976
tssdisai.dll 6.2.9200.23320 4-Mar-2021 15:57 144,896
VmHostAI.dll 6.2.9200.23320 4-Mar-2021 15:57 122,880
securebootai.dll 6.2.9200.23320 4-Mar-2021 15:57 36,352
winsockai.dll 6.2.9200.23320 4-Mar-2021 15:57 60,928
ws2_helper.dll 6.2.9200.16384 25-Jul-2012 20:08 59,904
httpai.dll 6.2.9200.23320 4-Mar-2021 15:57 51,712
peerdistai.dll 6.2.9200.23320 4-Mar-2021 15:57 67,584
PrintAdvancedInstaller.dll 6.2.9200.23320 4-Mar-2021 15:57 71,168
msdtcadvancedinstaller.dll 6.2.9200.23320 4-Mar-2021 15:57 239,616
cleanupai.dll 6.2.9200.23320 4-Mar-2021 15:57 31,744
wdscore.dll 6.2.9200.22865 17-Aug-2019 10:10 272,384
CntrtextInstaller.dll 6.2.9200.23320 4-Mar-2021 15:57 165,376
drvstore.dll 6.2.9200.22865 17-Aug-2019 10:10 703,488
dpx.dll 6.2.9200.23060 14-May-2020 22:34 362,496
msdelta.dll 6.2.9200.23320 4-Mar-2021 15:57 414,208
mspatcha.dll 6.2.9200.16384 25-Jul-2012 20:07 45,056
PkgMgr.exe 6.2.9200.22865 17-Aug-2019 10:10 196,096
cmiv2.dll 6.2.9200.23320 4-Mar-2021 15:57 3,305,984
cmitrust.dll 6.2.9200.23320 4-Mar-2021 15:57 407,552
WcmTypes.xsd Not versioned 2-Jun-2012 7:54 1,047
CbsMsg.dll 6.2.9200.16384 25-Jul-2012 20:05 41,472
CbsCore.dll 6.2.9200.23320 4-Mar-2021 15:57 1,163,776
TiWorker.exe 6.2.9200.21193 8-Aug-2014 23:57 189,440
TiFileFetcher.exe 6.2.9200.23060 14-May-2020 22:35 460,800
DrUpdate.dll 6.2.9200.22865 17-Aug-2019 10:10 244,224
wrpint.dll 6.2.9200.16384 25-Jul-2012 20:08 60,928
wcp.dll 6.2.9200.23320 4-Mar-2021 15:57 2,835,456
cmiadapter.dll 6.2.9200.23320 4-Mar-2021 15:57 116,224
smiengine.dll 6.2.9200.23320 4-Mar-2021 15:57 895,488
smipi.dll 6.2.9200.23320 4-Mar-2021 15:57 110,592
poqexec.exe 6.2.9200.23060 14-May-2020 22:35 148,480
amd64_installed Not versioned 2-Jun-2012 7:32 9
cmipnpinstall.dll 6.2.9200.23320 4-Mar-2021 15:57 250,880
bfsvc.dll 6.2.9200.23320 4-Mar-2021 15:57 91,648
netfxconfig.dll 6.2.9200.23320 4-Mar-2021 15:57 34,304
timezoneai.dll 6.2.9200.23320 4-Mar-2021 15:57 75,264
ConfigureIEOptionalComponentsAI.dll 6.2.9200.23320 4-Mar-2021 15:57 73,216
IEFileInstallAI.dll 6.2.9200.23320 4-Mar-2021 15:57 58,880
GlobalInstallOrder.xml Not versioned 2-Jun-2012 13:26 2,240,509
servicemodelregai.dll 6.2.9200.23320 4-Mar-2021 15:57 116,224
SetIEInstalledDateAI.dll 6.2.9200.23320 4-Mar-2021 15:57 42,496
ceipfwdai.dll 6.2.9200.23320 4-Mar-2021 15:57 212,480
luainstall.dll 6.2.9200.23320 4-Mar-2021 15:57 50,176
bcdeditai.dll 6.2.9200.23320 4-Mar-2021 15:57 300,032
appxreg.dll 6.2.9200.23320 4-Mar-2021 15:57 15,360
fveupdateai.dll 6.2.9200.23320 4-Mar-2021 15:57 56,832
RegisterIEPKeysAI.dll 6.2.9200.23320 4-Mar-2021 15:57 19,456
TrustedInstaller.exe 6.2.9200.21193 8-Aug-2014 23:57 98,304
mofinstall.dll 6.2.9200.23320 4-Mar-2021 15:01 61,440
esscli.dll 6.2.9200.16384 25-Jul-2012 20:19 283,648
mofd.dll 6.2.9200.23320 4-Mar-2021 15:01 196,608
repdrvfs.dll 6.2.9200.16384 25-Jul-2012 20:19 274,944
fastprox.dll 6.2.9200.22865 17-Aug-2019 9:15 629,248
wbemcomn.dll 6.2.9200.21193 8-Aug-2014 23:36 380,928
wbemcore.dll 6.2.9200.23320 4-Mar-2021 15:01 924,672
wmiutils.dll 6.2.9200.16384 25-Jul-2012 20:19 88,576
wbemprox.dll 6.2.9200.16384 25-Jul-2012 20:19 28,160
wmicmiplugin.dll 6.2.9200.23320 4-Mar-2021 15:01 396,288
sppinst.dll 6.2.9200.21193 8-Aug-2014 23:36 518,656
cmifw.dll 6.2.9200.23320 4-Mar-2021 15:01 73,728
FirewallOfflineAPI.dll 6.2.9200.16384 25-Jul-2012 20:18 181,760
securebootai.dll 6.2.9200.23320 4-Mar-2021 15:01 39,936
winsockai.dll 6.2.9200.23320 4-Mar-2021 15:01 64,512
ws2_helper.dll 6.2.9200.16384 25-Jul-2012 20:20 48,128
httpai.dll 6.2.9200.23320 4-Mar-2021 15:01 53,760
peerdistai.dll 6.2.9200.23320 4-Mar-2021 15:01 66,048
PrintAdvancedInstaller.dll 6.2.9200.23320 4-Mar-2021 15:01 72,704
msdtcadvancedinstaller.dll 6.2.9200.23320 4-Mar-2021 15:01 200,704
cleanupai.dll 6.2.9200.23320 4-Mar-2021 15:01 36,352
wdscore.dll 6.2.9200.22865 17-Aug-2019 9:15 225,792
CntrtextInstaller.dll 6.2.9200.23320 4-Mar-2021 15:01 139,776
drvstore.dll 6.2.9200.23060 14-May-2020 21:38 549,376
dpx.dll 6.2.9200.22865 17-Aug-2019 9:15 250,368
msdelta.dll 6.2.9200.23320 4-Mar-2021 15:01 310,784
mspatcha.dll 6.2.9200.16384 25-Jul-2012 20:19 38,912
PkgMgr.exe 6.2.9200.22865 17-Aug-2019 9:15 194,048
cmiv2.dll 6.2.9200.23320 4-Mar-2021 15:01 2,165,248
cmitrust.dll 6.2.9200.23320 4-Mar-2021 15:01 289,792
WcmTypes.xsd Not versioned 2-Jun-2012 7:54 1,047
CbsMsg.dll 6.2.9200.16384 25-Jul-2012 20:18 41,472
CbsCore.dll 6.2.9200.23320 4-Mar-2021 15:01 1,008,128
TiWorker.exe 6.2.9200.21193 8-Aug-2014 23:37 186,880
TiFileFetcher.exe 6.2.9200.23060 14-May-2020 21:38 380,928
DrUpdate.dll 6.2.9200.23060 14-May-2020 21:38 193,024
wrpint.dll 6.2.9200.21193 8-Aug-2014 23:36 48,640
wcp.dll 6.2.9200.23320 4-Mar-2021 15:01 2,187,776
cmiadapter.dll 6.2.9200.23320 4-Mar-2021 15:01 104,448
smiengine.dll 6.2.9200.23320 4-Mar-2021 15:01 700,928
smipi.dll 6.2.9200.22865 17-Aug-2019 9:15 102,400
poqexec.exe 6.2.9200.22903 11-Oct-2019 8:17 132,608
x86_installed Not versioned 2-Jun-2012 7:32 9
cmipnpinstall.dll 6.2.9200.23320 4-Mar-2021 15:01 191,488
bfsvc.dll 6.2.9200.23320 4-Mar-2021 15:01 91,136
netfxconfig.dll 6.2.9200.23320 4-Mar-2021 15:01 40,448
timezoneai.dll 6.2.9200.23320 4-Mar-2021 15:01 67,584
ConfigureIEOptionalComponentsAI.dll 6.2.9200.23320 4-Mar-2021 15:01 69,632
IEFileInstallAI.dll 6.2.9200.23320 4-Mar-2021 15:01 59,904
GlobalInstallOrder.xml Not versioned 2-Jun-2012 13:26 2,240,509
servicemodelregai.dll 6.2.9200.23320 4-Mar-2021 15:01 96,768
SetIEInstalledDateAI.dll 6.2.9200.23320 4-Mar-2021 15:01 41,984
ceipfwdai.dll 6.2.9200.23320 4-Mar-2021 15:01 180,736
luainstall.dll 6.2.9200.23320 4-Mar-2021 15:01 39,424
bcdeditai.dll 6.2.9200.23320 4-Mar-2021 15:01 285,184
appxreg.dll 6.2.9200.23320 4-Mar-2021 15:01 22,016
fveupdateai.dll 6.2.9200.23320 4-Mar-2021 15:01 56,320
RegisterIEPKeysAI.dll 6.2.9200.23320 4-Mar-2021 15:01 24,576

References

For information on SSUs, see the following articles:

4.6 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

6.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.6%