Security features bypass in Microsoft Windows Hello

1) Security features bypass

EUVDB-ID: #VU54837

Risk: Low

CVSSv3.1: 5 [CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-34466

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a local attacker to bypass authentication process.

The vulnerability exists due to security feature bypass issue in Windows Hello. An attacker with physical access can gain elevated privileges on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 20H2 10.0.19042.572 - 10 2004 10.0.19041.264

CPE2.3

• cpe:2.3:o:microsoft:windows:10 20H2:10.0.19042.572:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 21H1:10.0.19043.985:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 1511:10.0.10586.3:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 1607:10.0.14393.10:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 1703:10.0.15063.138:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 1709:10.0.16299.19:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 1803:10.0.17134.48:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 1809:10.0.17763.1:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 1909:10.0.18363.476:*:*:*:*:*:
• cpe:2.3:o:microsoft:windows:10 2004:10.0.19041.264:*:*:*:*:*:

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34466

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.