CVE-2023-21819: Windows Secure Channel Denial of Service Vulnerability
Windows Secure Channel Denial of Service Vulnerability
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.2604Patch KB5022834 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.2604Patch KB5022834 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19042.2604Patch KB5022834 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22621.1574Patch KB5022836 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.4010Patch KB5022840 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.1547Fixed in 10.0.20348.1540Patch KB5022921
Event History
Frequently Asked Questions
What is the severity of CVE-2023-21819?
CVE-2023-21819 has been rated as critical due to its potential to cause a denial of service on affected Windows systems.
How do I fix CVE-2023-21819?
To fix CVE-2023-21819, apply the security updates provided by Microsoft for your affected Windows version.
Which versions of Windows are affected by CVE-2023-21819?
CVE-2023-21819 affects multiple versions of Windows 10, Windows 11, and Windows Server 2019 and 2022.
What kind of attack does CVE-2023-21819 expose systems to?
CVE-2023-21819 exposes systems to denial of service attacks, potentially impacting availability.
Is there a workaround for CVE-2023-21819 if I cannot apply the patch immediately?
Currently, no specific workarounds have been provided for CVE-2023-21819, so applying the patch is recommended.