# CVE-2026-69408: Microsoft Windows Media Foundation integer overflow

Source: https://junglewise.ai/threats/cve-2026-69408-microsoft-windows-media-foundation-integer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-69408 · Severity: critical · CVSS 9.8 · Published 2026-09-08

Windows Media Foundation is a core component of Windows that processes and plays multimedia content. An integer overflow vulnerability in this component allows remote attackers to execute malicious code on affected systems without authentication, potentially compromising entire enterprises through email attachments, web content, or network-based delivery.

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

## Quick answers

**Is CVE-2026-69408 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69408 being exploited in the wild.

**How severe is CVE-2026-69408?** Critical severity, with a CVSS score of 9.8, published 8 September 2026.

**Which products and versions are affected?** Microsoft Windows Media Foundation.

**Is there a fix for CVE-2026-69408?** 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-2026-69408 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-69408?** Check whether you run Microsoft Windows Media Foundation. 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

An integer overflow or wraparound flaw exists in Microsoft Windows Media Foundation's processing of multimedia data structures. The vulnerability is remotely exploitable over a network without requiring user authentication or special privileges. An attacker can craft malicious media files or network packets that trigger the integer overflow, leading to out-of-bounds memory access and arbitrary code execution in the context of the vulnerable process. Patch availability is expected through Microsoft's standard security update process.

## Affected products

- Microsoft Windows Media Foundation

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69408](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69408)

## Related threats

- [Microsoft Windows Media Foundation heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-96157-heap-based-buffer-overflow-in-microsoft-windows-media-foundation)
- [Microsoft Windows Media Foundation heap buffer overflow](https://junglewise.ai/threats/cve-2026-122168-heap-based-buffer-overflow-in-microsoft-windows-media-foundation)
- [Microsoft Windows Media Foundation privilege escalation via deserialization](https://junglewise.ai/threats/cve-2026-96186-deserialization-of-untrusted-data-in-microsoft-windows-media)
- [Microsoft Windows Media Foundation heap overflow](https://junglewise.ai/threats/cve-2026-83517-heap-based-buffer-overflow-in-microsoft-windows-media-foundation)
- [Microsoft Windows Media Foundation out-of-bounds read](https://junglewise.ai/threats/cve-2026-70044-out-of-bounds-read-in-microsoft-windows-media-foundation-allows)