Vulnerability identifier: #VU71072

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-2023-21563

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 a local attacker to compromise the target system.

The vulnerability exists due to security features bypass in Windows Boot Manager. An attacker with physical access can bypass the BitLocker Device Encryption feature and gain access to encrypted data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 - 10 S, 11 - 11 22H2, 7, 8.1 - 8.1 RT

Windows Server: 2008 - 2022

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21563

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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.