CVE-2021-40449: Win32k Elevation of Privilege Vulnerability
Published Oct 13, 2021
·Updated
Unspecified vulnerability allows for an authenticated user to escalate privileges.
Other sources
Win32k Elevation of Privilege Vulnerability
Affected Software
34 affected components
Microsoft Windows 10 1507<10.0.10240.19086
Microsoft Windows 10 1607<10.0.14393.4704
Microsoft Windows 10 1809<10.0.17763.2237
Microsoft Windows 10 1909<10.0.18363.1854
Microsoft Windows 10 2004<10.0.19041.1288
Microsoft Windows 10 20h2<10.0.19041.1288
Microsoft Windows 10 21h1<10.0.19041.1288
Microsoft Windows 11
Microsoft Windows 11 21h2<10.0.22000.258
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server 2004<10.0.19041.1288
Microsoft Windows Server 2008=sp2
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016<10.0.14393.4704
Microsoft Windows Server 2019<10.0.17763.2237
Microsoft Windows Server 2022<10.0.20348.288
Microsoft Windows Server 20h2<10.0.19042.1288
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=21h1
Microsoft Windows 10=1607
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows Server=20h2
Microsoft Windows Server 2016
Microsoft Windows Server 2016=2004
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows
Remediation
Event History
Oct 13, 2021
CVE Published
via MITRE·12:26 AM
Data Sourced
via MITRE·12:26 AM
DescriptionSeverity
Data Sourced
via NVD·01:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Nov 17, 2021
Known Exploited
via CISA·12:00 AM
Known Ransomware
via CISA·12:00 AM
Apr 18, 2025
News Published
via BleepingComputer·01:43 PM
News Published
via BleepingComputer·01:45 PM
Frequently Asked Questions
1
What is CVE-2021-40449?
CVE-2021-40449 is a vulnerability in Microsoft Windows that allows an authenticated user to escalate privileges.
2
What software is affected by CVE-2021-40449?
Microsoft Windows 7, 8.1, 10, 11, Server 2008, 2012, 2016, 2019, and 2022 are affected by CVE-2021-40449.
3
What is the severity of CVE-2021-40449?
The severity of CVE-2021-40449 is high with a CVSS score of 7.8.
4
How can an attacker exploit CVE-2021-40449?
Details about the exploitation of CVE-2021-40449 are not publicly available at this time.
5
Are there any patches or mitigations available for CVE-2021-40449?
Yes, Microsoft has provided patches and mitigations for CVE-2021-40449. It is recommended to apply the latest security updates from Microsoft.