CVE-2025-21291 Windows Direct Show Remote Code Execution Vulnerability
An attacker can execute arbitrary code on Windows systems by exploiting a double-free vulnerability in the DirectShow component.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-21291?
CVE-2025-21291 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1809, published on 14 Jan 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Windows Direct Show Remote Code Execution Vulnerability
Weakness: CWE-415
Which versions are affected by CVE-2025-21291?
It affects 8 products.
Products include Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 22h2, Microsoft Windows 11 23h2, Microsoft Windows Server 2019 and 2 more.
How do I fix CVE-2025-21291?
No fix has been published for CVE-2025-21291 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-21291 being exploited?
There is no known exploitation of CVE-2025-21291 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1809
- CVE-2024-29988 Microsoft SmartScreen Prompt Security Feature Bypass
- CVE-2024-21412 Microsoft Windows Internet Shortcut Files Security Feature Bypass
- CVE-2025-62221 Microsoft Windows Use After Free
- CVE-2025-30400 Microsoft Windows DWM Core Library Use-After-Free
- CVE-2024-21338 Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control
Sources
Also known as GHSA-qcv4-8qfq-9w76.