CVE-2021-33771
Microsoft Windows Kernel Privilege Escalation Vulnerability
Published Jul 14, 2021 · updated Aug 10, 2026 · microsoft windows 10 1507
Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jul 14, 2021 · Catalog
Detected
Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
Nov 3, 2021 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Nov 17, 2021 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Aug 10, 2026 · Catalog
Updated
Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
Required action
Apply updates per vendor instructions.
CISA due date Nov 17, 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 8.1version unspecified
- vendor Microsoft Windowsversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2021-33771
Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
cisa.gov - CVE.orgVulnerability recordCVE-2021-33771
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2021-33771
30-day exploitation probability 10.2%
first.org - NIST NVDVulnerability recordCVE-2021-33771
Windows Kernel Elevation of Privilege Vulnerability
nvd.nist.gov