CVE-2023-21819
Windows Secure Channel Denial of Service Vulnerability
Windows Secure Channel Denial of Service Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Secure Channel Denial of Service Vulnerability
Windows Secure Channel Denial of Service Vulnerability
- Record
CVE-2023-21819- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Weakness
- CWE-125
- Updated
- 2026-11-02
EUVDEUVD-2023-25985
Windows Secure Channel Denial of Service Vulnerability
- Record
EUVD-2023-25985- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-f73c-qhrh-5x2f
Windows Secure Channel Denial of Service Vulnerability
Windows Secure Channel Denial of Service Vulnerability
- Record
GHSA-f73c-qhrh-5x2f- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
NVD
Windows Secure Channel Denial of Service Vulnerability
- Record
CVE-2023-21819- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1809
- microsoft windows 10 version 20h2
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 21h2
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows 10 1809
- microsoft windows 10 20h2
- microsoft windows 10 21h2
- microsoft windows 10 22h2
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History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-21819 is a high vulnerability (CVSS 7.5) in Microsoft Windows 10 Version 1809, published February 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 30.8%, the 98th percentile. No source names a fixed version.