CVE-2021-1691

Windows Hyper-V Denial of Service Vulnerability

Description

Windows Hyper-V Denial of Service Vulnerability

7.7

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.98% Top 25%

Vendor Advisory microsoft.com

Affected: Microsoft Windows Server version 20H2

Affected: Microsoft Windows 10 Version 1909

Affected: Microsoft Windows Server, version 1909 (Server Core installation)

Affected: Microsoft Windows 10 Version 2004

Affected: Microsoft Windows Server version 2004

References

Link	Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1691	vendor advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1691

Frequently Asked Questions

What is the severity of CVE-2021-1691?: CVE-2021-1691 has been scored as a high severity vulnerability.
How to fix CVE-2021-1691?: To fix CVE-2021-1691, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-1691 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-1691 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-1691?: CVE-2021-1691 affects Microsoft Windows Server version 20H2, Microsoft Windows 10 Version 1909, Microsoft Windows Server, version 1909 (Server Core installation), Microsoft Windows 10 Version 2004, Microsoft Windows Server version 2004.

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