High7.8Microsoft Server

High [CVE-2021-26431] Windows Recovery Environment Agent Elevation of Privilege Vulnerability

This high-severity Microsoft Server advisory covers CVE-2021-26431 affecting Windows Server version 2004, Windows Server version 20H2.

CVE-2021-26431 Published Aug 12, 2021Updated by vendor Aug 10, 2026

CVE-2021-26431

Affected products & platforms

Microsoft ServerWindows Server

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Summary

Windows Recovery Environment Agent Elevation of Privilege Vulnerability

Affected products named by the advisory: Windows Server version 2004; Windows Server version 20H2.

Affected versions

Windows 10 Version 2004 10.0.0 before 10.0.19041.1165
Windows 10 Version 20H2 10.0.0 before 10.0.19042.1165
Windows 10 Version 21H1 10.0.0 before 10.0.19043.1165
Windows Server version 2004 10.0.0 before 10.0.19041.1165
Windows Server version 20H2 10.0.0 before 10.0.19042.1165

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions

10.0.19041.1165
10.0.19042.1165
10.0.19043.1165

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation

Upgrade to a fixed release: 10.0.19041.1165, 10.0.19042.1165, 10.0.19043.1165. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Discussion(0)

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