Executive brief
Windows Media Foundation is a core Windows component responsible for processing and playing audio and video content. A heap-based buffer overflow in this component allows attackers to execute arbitrary code on affected systems by sending specially crafted media files over a network, potentially leading to complete system compromise without requiring any user action beyond opening a malicious file.
Technical details
A heap-based buffer overflow vulnerability exists in Microsoft Windows Media Foundation's media parsing or processing logic. The vulnerability can be triggered by sending or crafting a specially malformed media file that causes a heap buffer to be overflowed. This is a network-reachable vulnerability requiring only that the victim opens or processes the malicious media file—no authentication is required. Successful exploitation allows remote code execution with the privileges of the affected process. A patch from Microsoft should be available; consult the Microsoft Security Response Center for the official update.
Affected products
- Microsoft Windows Media Foundation
Timeline
- 2026-09-08: disclosed