CVE-2023-21818

HighCVSS 7.5/10Last modified Aug 19, 2026

Description

Windows Secure Channel Denial of Service Vulnerability

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1507>= 10.0.10240.0, < 10.0.10240.19747
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.5717
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.4010
MicrosoftWindows 10 Version 1809>= 10.0.0, < 10.0.17763.4010
MicrosoftWindows 10 Version 20H2>= 10.0.0, < 10.0.19042.2604
MicrosoftWindows 10 Version 21H2>= 10.0.19043.0, < 10.0.19044.2604
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.2604
MicrosoftWindows 11 version 21H2>= 10.0.0, < 10.0.22621.1574
MicrosoftWindows Server 2008 Service Pack 2>= 6.0.6003.0, < 6.0.6003.21915
MicrosoftWindows Server 2008 R2 Service Pack 1>= 6.1.7601.0, < 6.1.7601.26366
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)>= 6.1.7601.0, < 6.1.7601.26366
MicrosoftWindows Server 2008 Service Pack 2>= 6.0.6003.0, < 6.0.6003.21915
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)>= 6.0.6003.0, < 6.0.6003.21915
MicrosoftWindows Server 2012>= 6.2.9200.0, < 6.2.9200.24116
MicrosoftWindows Server 2012 (Server Core installation)>= 6.2.9200.0, < 6.2.9200.24116
MicrosoftWindows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.20821
MicrosoftWindows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.20821
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.5717
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.5717
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.4010
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.4010
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.1547

References

Timeline

Published
Feb 14, 2023
Last modified
Aug 19, 2026
NVD status
Modified

Related CVEs from 2023

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CVE-2023-21818: High severity, CVSS 7.5 | Vulnix