Executive brief
Windows Media Foundation is a core Windows component used for processing and playback of audio and video content. A heap-based buffer overflow flaw allows an attacker to execute arbitrary code on a computer by sending a specially crafted media file over the network, potentially compromising system confidentiality, integrity, and availability without requiring user credentials or special access rights.
Technical details
A heap-based buffer overflow vulnerability exists in Microsoft Windows Media Foundation, a multimedia framework component responsible for handling audio and video codecs and playback. The vulnerability is triggered when processing malformed media streams, allowing an attacker to overwrite heap memory and achieve remote code execution. The attack requires network access but does not require authentication or elevated privileges. An attacker can exploit this by sending a specially crafted media file to trigger the overflow, resulting in code execution with the privileges of the Media Foundation service or user process. Microsoft has released security updates to address this issue.
Affected products
- Microsoft Windows Media Foundation
Timeline
- 2026-09-08: disclosed