# CVE-2026-69891: Microsoft Windows Media use-after-free privilege escalation

Source: https://junglewise.ai/threats/cve-2026-69891-microsoft-windows-media-use-after-free-privilege-escalation  
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-2026-69891 · Severity: high · CVSS 7 · Published 2026-09-08

Windows Media is a core Windows component that processes multimedia content. A use-after-free memory vulnerability allows an authorized local user to execute code with elevated privileges, potentially granting an attacker administrative control over the system.

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

## Quick answers

**Is CVE-2026-69891 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69891 being exploited in the wild.

**How severe is CVE-2026-69891?** High severity, with a CVSS score of 7, published 8 September 2026.

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

**Is there a fix for CVE-2026-69891?** 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-2026-69891 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-69891?** Check whether you run Microsoft Windows Media. 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 use-after-free vulnerability exists in Windows Media, a memory safety issue where freed memory is accessed after deallocation. The vulnerability requires the attacker to be an authorized user on the local system. By exploiting this flaw, an attacker can execute arbitrary code in the context of the Windows Media process, leading to privilege escalation to SYSTEM or administrator level. No public exploit has been reported in the wild to date.

## Affected products

- Microsoft Windows Media

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69891](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69891)

## Related threats

- [Windows Media heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-96071-heap-based-buffer-overflow-in-windows-media-allows-an)
- [Windows Media heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-83650-heap-based-buffer-overflow-in-windows-media-allows-an-authorized)
- [Windows Media heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-83641-heap-based-buffer-overflow-in-windows-media-allows-an-authorized)