CVE-2021-43240

NTFS Set Short Name Elevation of Privilege Vulnerability

Description

NTFS Set Short Name Elevation of Privilege Vulnerability

7.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.41%

Vendor Advisory microsoft.com

Affected: Microsoft Windows 10 Version 1909

Affected: Microsoft Windows 10 Version 21H1

Affected: Microsoft Windows Server 2022

Affected: Microsoft Windows 10 Version 2004

Affected: Microsoft Windows Server version 2004

Affected: Microsoft Windows 10 Version 20H2

Affected: Microsoft Windows Server version 20H2

Affected: Microsoft Windows 11 version 21H2

Affected: Microsoft Windows 10 Version 21H2

References

Link	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43240	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-43240?: CVE-2021-43240 has been scored as a high severity vulnerability.
How to fix CVE-2021-43240?: To fix CVE-2021-43240, 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-2021-43240 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-43240 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-43240?: CVE-2021-43240 affects Microsoft Windows 10 Version 1909, Microsoft Windows 10 Version 21H1, Microsoft Windows Server 2022, Microsoft Windows 10 Version 2004, Microsoft Windows Server version 2004, Microsoft Windows 10 Version 20H2, Microsoft Windows Server version 20H2, Microsoft Windows 11 version 21H2, Microsoft Windows 10 Version 21H2.

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