Medium5.5Microsoft Server

Medium [CVE-2021-42277] Diagnostics Hub Standard Collector Elevation of Privilege Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2021-42277 affecting Windows Server 2016 (Server Core installation), Windows Server 2019 (Server Core installation), Windows Server 2022.

CVE-2021-42277 Published Nov 10, 2021Updated by vendor Aug 19, 2026

CVE-2021-42277

Affected products & platforms

Microsoft ServerWindows Server

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Summary

Diagnostics Hub Standard Collector Elevation of Privilege Vulnerability

Affected products named by the advisory: Windows Server 2016; Windows Server 2016 (Server Core installation); Windows Server 2019; Windows Server 2019 (Server Core installation); and 3 more.

Affected products named by the advisory: Windows Server 2022; Windows Server version 2004; Windows Server version 20H2.

Affected versions

Microsoft Visual Studio 2015 Update 3 14.0.0 before 27550.00
Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) 15.9.0 before 15.9.41
Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) 16.11.0 before 16.11.6
Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) 16.0.0 before 16.7.21
Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) 15.0.0 before 16.9.13
Windows 10 Version 1507 10.0.10240.0 before 10.0.10240.19119
Windows 10 Version 1607 10.0.14393.0 before 10.0.14393.4770
Windows 10 Version 1809 10.0.17763.0 before 10.0.17763.2300
Windows 10 Version 1809 10.0.0 before 10.0.17763.2300
Windows 10 Version 1909 10.0.0 before 10.0.18363.1916
Windows 10 Version 2004 10.0.0 before 10.0.19041.1348
Windows 10 Version 20H2 10.0.0 before 10.0.19042.1348

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

Fixed versions

27550.00
15.9.41
16.11.6
16.7.21
16.9.13
10.0.10240.19119
10.0.14393.4770
10.0.17763.2300
10.0.18363.1916
10.0.19041.1348
10.0.19042.1348
10.0.19043.1348

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

Mitigation

Upgrade to a fixed release: 27550.00, 15.9.41, 16.11.6, 16.7.21, 16.9.13, 10.0.10240.19119. 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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