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mscveMicrosoftMS:CVE-2021-34450
HistoryJul 13, 2021 - 7:00 a.m.

Windows Hyper-V Remote Code Execution Vulnerability

2021-07-1307:00:00
Microsoft
msrc.microsoft.com
37

9 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

8.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.6 High

AI Score

Confidence

High

0.009 Low

EPSS

Percentile

82.6%

JSON

Related

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KB5004237: Windows 10 Version 2004 / Windows 10 Version 20H2 / Windows 10 Version 21H1 Security Update (July 2021)
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July 13, 2021—KB5004245 (OS Build 18363.1679)
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July 13, 2021—KB5004244 (OS Build 17763.2061)
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9 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

8.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.6 High

AI Score

Confidence

High

0.009 Low

EPSS

Percentile

82.6%

JSON
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