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High severity · published Jan 10, 2023
CVE-2023-21543
Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability
8.1
CVSS
1.8%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
W1
Windows 10 1607 · Microsoft
All versions, or not specified · source: NVD
W1
Windows 10 1809 · Microsoft
All versions, or not specified · source: NVD
W1
Windows 10 20h2 · Microsoft
All versions, or not specified · source: NVD
W1
Windows 10 21h2 · Microsoft
All versions, or not specified · source: NVD
W1
Windows 10 22h2 · Microsoft
All versions, or not specified · source: NVD
W1
Windows 11 21h2 · Microsoft
All versions, or not specified · source: NVD
W1
Windows 11 22h2 · Microsoft
All versions, or not specified · source: NVD
W7
Windows 7 · Microsoft
All versions, or not specified · source: NVD
W8
Windows 8.1 · Microsoft
All versions, or not specified · source: NVD
WR
Windows RT 8.1 · Microsoft
All versions, or not specified · source: NVD
WS
Windows Server 2008 · Microsoft
r2 · source: NVD
WS
Windows Server 2012 · Microsoft
r2 · source: NVD
Affected product
W1
Windows 10 1607
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-21543
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-21543
msrc.microsoft.com
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21543
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