CVE-2021-40449
Microsoft Windows Win32k Privilege Escalation Vulnerability
Published Oct 12, 2021 · updated Jun 16, 2026 · microsoft windows 10 1507
Unspecified vulnerability allows for an authenticated user to escalate privileges.
Timeline
Detection, updates, and resolution for this record.
Oct 12, 2021 · Catalog
Detected
Unspecified vulnerability allows for an authenticated user to escalate privileges.
Nov 17, 2021 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Dec 1, 2021 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Jun 16, 2026 · Catalog
Updated
Unspecified vulnerability allows for an authenticated user to escalate privileges.
Required action
Apply updates per vendor instructions.
CISA due date Dec 1, 2021
Affected
- cpe microsoft/windows 10 1507version unspecified
- cpe microsoft/windows 10 1607version unspecified
- cpe microsoft/windows 10 1809version unspecified
- cpe microsoft/windows 10 1909version unspecified
- cpe microsoft/windows 10 2004version unspecified
- cpe microsoft/windows 10 20h2version unspecified
- cpe microsoft/windows 10 21h1version unspecified
- cpe microsoft/windows 11version unspecified
- vendor Microsoft Windowsversion unspecified
Sources
- CISA KEVCVE-2021-40449
Unspecified vulnerability allows for an authenticated user to escalate privileges.
cisa.gov - CVE.orgCVE-2021-40449
Official CVE identifier
cve.org - FIRST EPSSCVE-2021-40449
30-day exploitation probability 74.1%
first.org - Metasploit Modulesexploit_windows/local/cve_2021_40449
Public module reference (good). Module source is not copied into this catalog.
rapid7.com - NIST NVDCVE-2021-40449
Win32k Elevation of Privilege Vulnerability
nvd.nist.gov - Packet Storm Securityhttp://packetstormsecurity.com/files/164926/Win32k-NtGdiResetDC-Use-After-Free-Local-Privilege-Escalation.html
Packet Storm link already published on the finding.
packetstormsecurity.com