#VU59479 Security features bypass in Windows and Windows Server - CVE-2022-21906

Vulnerability identifier: #VU59479

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-21906

CWE-ID: CWE-254

Exploitation vector: Network

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 remote attacker to bypass implemented security restrictions.

The vulnerability exists due to improper input validation in Windows Defender Application Control. A remote attacker can pass a specially crafted file to the system and bypass implemented security restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 20H2 10.0.19042.572, 10 21H1 10.0.19043.985, 10 1809 10.0.17763.1, 10 1909 10.0.18363.476, 11 21H2 10.0.22000.194

Windows Server: 2019 10.0.17763.1 - 2019 20H2, 2022 10.0.20348.202

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21906

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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