Security features bypass in Microsoft Windows Secure Kernel Mode

Published: 2021-07-13
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-33744
Exploitation vector Local
Public exploit N/A
Vulnerable software
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security features bypass

EUVDB-ID: #VU54828

Risk: Low


CVE-ID: CVE-2021-33744

CWE-ID: CWE-254 - Security Features

Exploit availability: No


The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to security feature bypass issue in Windows Secure Kernel Mode. A local administrator can gain elevated privileges on the target system.


Install updates from vendor's website.

Vulnerable software versions

Windows: 10 20H2 - 10 2004

Windows Server: 2019 - 2019 2004

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?