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Windows 10 CVE-2021-43893

HIGH
Exposure of Resource to Wrong Sphere (CWE-668)
2021-12-15 secure@microsoft.com
Microsoft Information Disclosure Windows 10 Windows 11 Windows 7 Windows 8 1 Windows Rt 8 1 Windows Server Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019
7.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
CVE Published
Dec 15, 2021 - 15:15 nvd
HIGH 7.5

DescriptionNVD

Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability

AnalysisAI

Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. This Exposure of Resource to Wrong Sphere vulnerability could allow attackers to access resources from an unintended security context.

Technical ContextAI

This vulnerability is classified as Exposure of Resource to Wrong Sphere (CWE-668), which allows attackers to access resources from an unintended security context. Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability Affected products include: Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Implement proper access controls, validate resource access permissions, use security boundaries.

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CVE-2021-43893 vulnerability details – vuln.today
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