Vulnerability identifier: #VU87473

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-21431

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to security features bypass in the Hypervisor-Protected Code Integrity (HVCI). A local user can bypass code integrity protections in Windows.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2019 10.0.17763.1 - 2022 23H2

Windows: 11 21H2 10.0.22000.194, 10 22H2 10.0.19045.2130, 10 21H2 10.0.19044.1288, 10 21H1 10.0.19043.985, 10 1507 10.0.10240.16405, 10 20H2 10.0.19042.572, 10 2004 10.0.19041.264, 10 1909 10.0.18363.476, 10 1903 10.0.18362.116, 10 1809 10.0.17763.1, 10 1803 10.0.17134.48, 10 1709 10.0.16299.19, 10 1703 10.0.15063.138, 10 1607 10.0.14393.10, 10 1511 10.0.10586.3, 11 23H2 10.0.22631.2428, 11 22H2 10.0.22621.521

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External links
http://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21431

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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.