High severity · published Feb 14, 2023
CVE-2023-21819
Windows Secure Channel Denial of Service Vulnerability
7.5
CVSS
30.8%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)30.8% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
W1
Windows 10 1809 · Microsoft
before 10.0.17763.4010 · source: NVD
W1
Windows 10 20h2 · Microsoft
before 10.0.19042.2604 · source: NVD
W1
Windows 10 21h2 · Microsoft
before 10.0.19044.2604 · source: NVD
W1
Windows 10 22h2 · Microsoft
before 10.0.19045.2604 · source: NVD
W1
Windows 11 21h2 · Microsoft
before 10.0.22000.1574 · source: NVD
WS
Windows Server 2019 · Microsoft
All versions, or not specified · source: NVD
WS
Windows Server 2022 · Microsoft
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-21819
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-21819
Patch
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21819
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