CVE-2021-42286

Published: Nov 10, 2021Modified: Aug 19, 2026

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: NVD (Secondary)

Description

Windows Core Shell SI Host Extension Framework for Composable Shell Elevation of Privilege Vulnerability

Affected (11)

Products: Microsoft: Windows 10, Windows Server, Windows Server 2016

3 products

Windows Server 2016

Configuration A

11 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10	Version 2004
Microsoft Windows 10	Version 2004
Microsoft Windows 10	Version 2004
Microsoft Windows 10	Version 20h2
Microsoft Windows 10	Version 20h2
Microsoft Windows 10	Version 20h2
Microsoft Windows 10	Version 21h1
Microsoft Windows 10	Version 21h1
Microsoft Windows 10	Version 21h1
Microsoft Windows Server	Version 20h2
Microsoft Windows Server 2016	Version 2004

Related CWEs

Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

References (2)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42286

Source: secure@microsoft.com

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42286

Source: af854a3a-2127-422b-91ae-364da2661108

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Timeline

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