Oct 2021: Win32k Elevation of Privilege Vulnerability
CVE-2021-40449 Published on October 13, 2021

Win32k Elevation of Privilege Vulnerability
Win32k Elevation of Privilege Vulnerability

NVD

Known Exploited Vulnerability

This Microsoft Windows Win32k Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Unspecified vulnerability allows for an authenticated user to escalate privileges.

The following remediation steps are recommended / required by December 1, 2021: Apply updates per vendor instructions.

Weakness Type

What is a Dangling pointer Vulnerability?

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

CVE-2021-40449 has been classified to as a Dangling pointer vulnerability or weakness.

Products Associated with CVE-2021-40449

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-40449 are published in these products:

Microsoft Windows 10

Microsoft Windows 11

Microsoft Windows 7

Microsoft Windows 8.1

Microsoft Windows Rt 8 1

Microsoft Windows Server

Microsoft Windows Server 2008

Microsoft Windows Server 2012

Microsoft Windows Server 2016

Microsoft Windows Server 2019

Microsoft Windows Server 2022

Microsoft Windows 10 1909

Microsoft Windows 10 2004

Microsoft Windows Server 2004

Microsoft Windows Server 20h2

Microsoft Windows 10 21h1

Microsoft Windows 10 1507

Microsoft Windows Server 2008 Sp2

Microsoft Windows Server 2008 R2

Microsoft Windows Server 2012 R2

Affected Versions

Microsoft Windows 10 Version 1809:

Version 10.0.0 and below 10.0.17763.2237 is affected.

Microsoft Windows Server 2019:

Version 10.0.0 and below 10.0.17763.2237 is affected.

Microsoft Windows Server 2019 (Server Core installation):

Version 10.0.0 and below 10.0.17763.2237 is affected.

Microsoft Windows 10 Version 1909:

Version 10.0.0 and below 10.0.18363.1854 is affected.

Microsoft Windows 10 Version 21H1:

Version 10.0.0 and below 10.0.19041.1288 is affected.

Microsoft Windows Server 2022:

Version 10.0.0 and below 10.0.20348.288 is affected.

Microsoft Windows 10 Version 2004:

Version 10.0.0 and below 10.0.19041.1288 is affected.

Microsoft Windows Server version 2004:

Version 10.0.0 and below 10.0.19041.1288 is affected.

Microsoft Windows 10 Version 20H2:

Version 10.0.0 and below 10.0.19041.1288 is affected.

Microsoft Windows Server version 20H2:

Version 10.0.0 and below 10.0.19042.1288 is affected.

Microsoft Windows 11 version 21H2:

Version 10.0.0 and below 10.0.22000.258 is affected.

Microsoft Windows 10 Version 1507:

Version 10.0.0 and below 10.0.10240.19086 is affected.

Microsoft Windows 10 Version 1607:

Version 10.0.0 and below 10.0.14393.4704 is affected.

Microsoft Windows Server 2016:

Version 10.0.0 and below 10.0.14393.4704 is affected.

Microsoft Windows Server 2016 (Server Core installation):

Version 10.0.0 and below 10.0.14393.4704 is affected.

Microsoft Windows 7:

Version 6.1.0 and below 6.1.7601.25740 is affected.

Microsoft Windows 7 Service Pack 1:

Version 6.1.0 and below 6.1.7601.25740 is affected.

Microsoft Windows 8.1:

Version 6.3.0 and below 6.3.9600.20144 is affected.

Microsoft Windows Server 2008 Service Pack 2:

Version 6.0.0 and below 6.0.6003.21251 is affected.

Microsoft Windows Server 2008 Service Pack 2 (Server Core installation):

Version 6.0.0 and below 6.0.6003.21251 is affected.

Microsoft Windows Server 2008 Service Pack 2:

Version 6.0.0 and below 6.0.6003.21251 is affected.

Microsoft Windows Server 2008 R2 Service Pack 1:

Version 6.1.0 and below 6.1.7601.25740 is affected.

Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation):

Version 6.0.0 and below 6.1.7601.25740 is affected.

Microsoft Windows Server 2012:

Version 6.2.0 and below 6.2.9200.23490 is affected.

Microsoft Windows Server 2012 (Server Core installation):

Version 6.2.0 and below 6.2.9200.23490 is affected.

Microsoft Windows Server 2012 R2:

Version 6.3.0 and below 6.3.9600.20144 is affected.

Microsoft Windows Server 2012 R2 (Server Core installation):

Version 6.3.0 and below 6.3.9600.20144 is affected.

Exploit Probability

EPSS

91.30%

Percentile

99.64%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.