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HIGH · 8.1

CVE-2023-21543

Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability

Vulnerability Description

Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftWindows 10 1607-
MicrosoftWindows 10 1809-
MicrosoftWindows 10 20H2-
MicrosoftWindows 10 21H2-
MicrosoftWindows 10 22H2-
MicrosoftWindows 11 21H2-
MicrosoftWindows 11 22H2-
MicrosoftWindows 7-
MicrosoftWindows 8.1-
MicrosoftWindows Rt 8.1-
MicrosoftWindows Server 2008-
MicrosoftWindows Server 2012-
MicrosoftWindows Server 2016-
MicrosoftWindows Server 2019-
MicrosoftWindows Server 2022-

Related Weaknesses (CWE)

CWE-400

References

FAQ

What is CVE-2023-21543?

CVE-2023-21543 is a vulnerability with a CVSS score of 8.1 (HIGH). Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability

How severe is CVE-2023-21543?

CVE-2023-21543 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-21543?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 20H2, Microsoft Windows 10 21H2, Microsoft Windows 10 22H2.