Windows Layer 2 Tunneling Protocol (L2TP) Denial of Service Vulnerability
CVE-2023-21757

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
10 January 2023

What is CVE-2023-21757?

The Windows Layer 2 Tunneling Protocol (L2TP) has a vulnerability that allows a malicious actor to disrupt the service, potentially leading to significant downtime and a loss of availability. Proper patching and monitoring are essential to mitigate the risk associated with this vulnerability. Users are encouraged to review the provided advisory for guidance on securing their systems.

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Affected Version(s)

Windows 10 Version 1507 32-bit Systems 10.0.10240.0 < 10.0.10240.19685

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.5648

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.3887

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

EPSS Score

23% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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