4.6
CVSSv2

CVE-2021-26431

Published: 12/08/2021 Updated: 28/12/2023
CVSS v2 Base Score: 4.6 | Impact Score: 6.4 | Exploitability Score: 3.9
CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8
VMScore: 409
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Summary

This vulnerability allows physically present malicious users to bypass authentication on affected installations of Microsoft Windows. Authentication is not required to exploit this vulnerability. The specific flaw exists within the lock screen. The issue results from the lack of proper access control prior to authentication. An attacker can leverage this vulnerability to bypass authentication on the system.

Vulnerability Trend

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microsoft windows 10 2004

microsoft windows server 2016 2004

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microsoft windows server 2016 20h2

microsoft windows 10 21h1