CVE-2025-21304 Microsoft DWM Core Library Elevation of Privilege Vulnerability
An attacker can exploit a use-after-free flaw in the Windows DWM Core Library to escalate privileges on affected Windows systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-21304?
CVE-2025-21304 is a high-severity use after free vulnerability in Microsoft Windows 10 1607, published on 14 Jan 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Microsoft DWM Core Library Elevation of Privilege Vulnerability
Weakness: CWE-416
Which versions are affected by CVE-2025-21304?
It affects 6 products.
Products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows Server 2016, Microsoft Windows Server 2019.
How do I fix CVE-2025-21304?
No fix has been published for CVE-2025-21304 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-2025-21304 being exploited?
There is no known exploitation of CVE-2025-21304 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1607
- CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free
- CVE-2026-21510 Microsoft Windows Shell Protection Mechanism Failure
- CVE-2026-21513 Microsoft MSHTML Framework Protection Mechanism Failure
- CVE-2023-32049 Microsoft Windows Defender SmartScreen Security Feature Bypass
- CVE-2023-29360 Microsoft Streaming Service Untrusted Pointer Dereference
Sources
Also known as GHSA-v77c-hvv5-38w8.