# CVE-2026-88229: Microsoft Windows Media Player heap buffer overflow

Source: https://junglewise.ai/threats/cve-2026-88229-heap-based-buffer-overflow-in-windows-media-player-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-88229 · Severity: high · CVSS 8.8 · Published 2026-11-10

Windows Media Player, a multimedia application bundled with Windows, contains a heap-based buffer overflow vulnerability that allows attackers to execute arbitrary code over the network. An attacker could exploit this vulnerability by sending specially crafted media content or files to a user, leading to system compromise and potential data theft or malware installation.

Technologies: [Microsoft Windows Media Player](https://junglewise.ai/threats/technologies/windows-media-player). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-88229 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88229 being exploited in the wild.

**How severe is CVE-2026-88229?** High severity, with a CVSS score of 8.8, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Media Player <UNKNOWN>.

**Is there a fix for CVE-2026-88229?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-88229 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-88229?** Check whether you run Microsoft Windows Media Player at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A heap-based buffer overflow exists in Windows Media Player's media parsing or processing logic, allowing remote code execution via network-delivered malicious media files or content. The vulnerability requires the user to open or play the malicious file, but does not require authentication. An attacker gains arbitrary code execution with the privileges of the user running Media Player.

## Affected products

- Microsoft Windows Media Player <UNKNOWN>

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88229](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88229)

## Related threats

- [Windows Media Player heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-96096-heap-based-buffer-overflow-in-windows-media-player-allows-an)
- [Microsoft Windows Media Player heap buffer overflow](https://junglewise.ai/threats/cve-2026-72960-microsoft-windows-media-player-heap-buffer-overflow)
- [Microsoft Windows Media Player heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-70203-microsoft-windows-media-player-heap-based-buffer-overflow)
- [Microsoft Windows Media heap buffer overflow](https://junglewise.ai/threats/cve-2026-48574-microsoft-windows-media-heap-buffer-overflow)