Vulnerability identifier: #VU66350

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-34303

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows an attacker to bypass Secure Boot.

The vulnerability exists due to unspecified error. An attacker with physical access to the system can bypass Secure Boot and gain unauthorized access to the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 11 - 11 21H2, 10 - 10 S, 8.1 - 8.1 RT

Windows Server: 2012 - 2022 20H2

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External links
http://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2022-34303
http://portal.msrc.microsoft.com/security-guidance/advisory/ADV990001

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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.