Executive brief
Windows Media Player is Microsoft's built-in media playback application used by millions of Windows users to play audio and video files. A heap-based buffer overflow vulnerability allows attackers to execute arbitrary code remotely on affected systems, potentially leading to complete system compromise, data theft, or installation of malware.
Technical details
A heap-based buffer overflow vulnerability exists in Windows Media Player that can be triggered when processing specially crafted media files or network streams. The vulnerability allows an unauthenticated attacker to achieve remote code execution over a network without requiring user interaction beyond opening a malicious media file. The overflow corrupts heap memory structures, enabling attackers to overwrite function pointers or other critical data to gain execution control. Patches are available from Microsoft via the security update guide.
Affected products
- Microsoft Windows Media Player
Timeline
- 2026-09-08: disclosed