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mscveMicrosoftMS:CVE-2021-34499
HistoryJul 13, 2021 - 7:00 a.m.

Windows DNS Server Denial of Service Vulnerability

2021-07-1307:00:00
Microsoft
msrc.microsoft.com
36
windows
dns
server
denial
vulnerability

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.7

Confidence

High

EPSS

0.002

Percentile

59.2%

JSON

Affected configurations

Vulners
Node
microsoftwindows_server_2016Range<10.0.14393.4530
OR
microsoftwindows_server_2016Range<10.0.14393.4530
OR
microsoftwindows_server_2008Range<6.0.6003.21167
OR
microsoftwindows_server_2008Range<6.0.6003.21167
OR
microsoftwindows_server_20h2Range<10.0.19042.1110
OR
microsoftwindows_server_2004Range<10.0.19041.1110
OR
microsoftwindows_server_2019Range<10.0.17763.2061
OR
microsoftwindows_server_2019Range<10.0.17763.2061
OR
microsoftwindows_server_2012Range<6.3.9600.20069r2
OR
microsoftwindows_server_2012Range<6.3.9600.20069r2
OR
microsoftwindows_server_2012Range<6.3.9600.20069r2
OR
microsoftwindows_server_2012Range<6.3.9600.20069r2
OR
microsoftwindows_server_2012Range<6.2.9200.23409
OR
microsoftwindows_server_2012Range<6.2.9200.23409
OR
microsoftwindows_server_2012Range<6.2.9200.23409
OR
microsoftwindows_server_2012Range<6.2.9200.23409
OR
microsoftwindows_server_2008Range<6.1.7601.25661r2x64
OR
microsoftwindows_server_2008Range<6.1.7601.25661r2x64
OR
microsoftwindows_server_2008Range<6.1.7601.25661r2x64
OR
microsoftwindows_server_2008Range<6.1.7601.25661r2x64
OR
microsoftwindows_server_2008Range<6.0.6003.21167x64
OR
microsoftwindows_server_2008Range<6.0.6003.21167x64
OR
microsoftwindows_server_2008Range<6.0.6003.21167x64
OR
microsoftwindows_server_2008Range<6.0.6003.21167x64
OR
microsoftwindows_server_2008Range<6.0.6003.21167
OR
microsoftwindows_server_2008Range<6.0.6003.21167
VendorProductVersionCPE
microsoftwindows_server_2016*cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
microsoftwindows_server_2008*cpe:2.3:o:microsoft:windows_server_2008:*:*:*:*:*:*:*:*
microsoftwindows_server_20h2*cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*
microsoftwindows_server_2004*cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
microsoftwindows_server_2019*cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
microsoftwindows_server_2012*cpe:2.3:o:microsoft:windows_server_2012:*:r2:*:*:*:*:*:*
microsoftwindows_server_2012*cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*
microsoftwindows_server_2008*cpe:2.3:o:microsoft:windows_server_2008:*:r2:*:*:*:*:x64:*
microsoftwindows_server_2008*cpe:2.3:o:microsoft:windows_server_2008:*:*:*:*:*:*:x64:*

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2021-07-14 00:00:00
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2021-07-13 00:00:00
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Patch Tuesday - July 2021
2021-07-13 20:56:26

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.7

Confidence

High

EPSS

0.002

Percentile

59.2%

JSON
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