CVE-2023-38166 Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
A use-after-free vulnerability in the Windows Layer 2 Tunneling Protocol allows remote attackers to execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-38166?
CVE-2023-38166 is a high-severity use after free vulnerability in Microsoft Windows 10 1507, published on 10 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
Which versions are affected by CVE-2023-38166?
It affects 12 products.
Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 21h2 and 6 more.
How do I fix CVE-2023-38166?
No fix has been published for CVE-2023-38166 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-38166 being exploited?
There is no known exploitation of CVE-2023-38166 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1507
- CVE-2017-8543 Microsoft Windows Search Remote Code Execution
- CVE-2025-33053 Microsoft Windows External Control of File Name or Path
- CVE-2025-33073 Microsoft Windows SMB Client Improper Access Control
- CVE-2024-49039 Microsoft Windows Task Scheduler Privilege Escalation
- CVE-2024-43461 Microsoft Windows MSHTML Platform Spoofing
Sources
Also known as GHSA-3g9v-h3h6-7qf4.