CVE-2023-29336 Microsoft Win32K Privilege Escalation
A use-after-free flaw in Win32k allows attackers to escalate privileges on affected Windows operating systems.
- Exploited in the wild
- Since 9 May 2023
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-29336?
CVE-2023-29336 is a high-severity use after free vulnerability in Microsoft Windows 10 1507, published on 9 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Win32k Elevation of Privilege Vulnerability
Weakness: CWE-416
Which versions are affected by CVE-2023-29336?
It affects 5 products.
Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016.
How do I fix CVE-2023-29336?
No fix has been published for CVE-2023-29336 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 30 May 2023.
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-2023-29336 being exploited?
Yes. Attackers have exploited CVE-2023-29336 in the wild since at least 9 May 2023.
Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.
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-8v67-hw4q-4844.