CVE-2021-26424

CriticalCVSS 9.9/10Last modified Aug 10, 2026

Description

Windows TCP/IP Remote Code Execution Vulnerability

Metrics

CVSS 3.1 9.9/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1507>= 10.0.10240.0, < 10.0.10240.19022
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.4583
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.2114
MicrosoftWindows 10 Version 1809>= 10.0.0, < 10.0.17763.2114
MicrosoftWindows 10 Version 1909>= 10.0.0, < 10.0.18363.1734
MicrosoftWindows 10 Version 2004>= 10.0.0, < 10.0.19041.1165
MicrosoftWindows 10 Version 20H2>= 10.0.0, < 10.0.19042.1165
MicrosoftWindows 10 Version 21H1>= 10.0.0, < 10.0.19043.1165
MicrosoftWindows 7>= 6.1.0, < 6.1.7601.25685
MicrosoftWindows 7 Service Pack 1>= 6.1.0, < 6.1.7601.25685
MicrosoftWindows 8.1>= 6.3.0, < 6.3.9600.20094
MicrosoftWindows Server 2008 R2 Service Pack 1>= 6.1.7601.0, < 6.1.7601.25685
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)>= 6.1.7601.0, < 6.1.7601.25685
MicrosoftWindows Server 2008 Service Pack 2>= 6.0.6003.0, < 6.0.6003.21192
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)>= 6.0.6003.0, < 6.0.6003.21192
MicrosoftWindows Server 2012>= 6.2.9200.0, < 6.2.9200.23435
MicrosoftWindows Server 2012 (Server Core installation)>= 6.2.9200.0, < 6.2.9200.23435
MicrosoftWindows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.20094
MicrosoftWindows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.20094
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.4583
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.4583
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.2114
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.2114
MicrosoftWindows Server version 2004>= 10.0.0, < 10.0.19041.1165
MicrosoftWindows Server version 20H2>= 10.0.0, < 10.0.19042.1165

References

Timeline

Published
Aug 12, 2021
Last modified
Aug 10, 2026
NVD status
Modified

Related CVEs from 2021

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CVE-2021-26424: Critical severity, CVSS 9.9 | Vulnix