Vulnerability identifier: #VU59498

Vulnerability risk: Low

CVSSv3.1: 4 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-21894

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a local user to bypass implemented security restrictions.

the vulnerability exists due to an error in Secure Boot implementation. A local user can bypass implemented security restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1809 10.0.17763.1, 10 1909 10.0.18363.476, 10 20H2 10.0.19042.572, 10 1607 10.0.14393.10, 8.1 - 8.1 RT, 10 21H1 10.0.19043.985, 11 21H2 10.0.22000.194, 10 21H2 10.0.19044.1288, 10 1507 10.0.10240.16405, 10 2004 10.0.19041.264, 10 1903 10.0.18362.116, 10 1803 10.0.17134.48, 10 1709 10.0.16299.19, 10 1703 10.0.15063.138, 10 1511 10.0.10586.3

Windows Server: 2012 - 2022 10.0.20348.202

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21894

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.