# CVE-2026-56183: Microsoft Windows MIDI Service privilege escalation

Source: https://junglewise.ai/threats/cve-2026-56183-microsoft-windows-midi-service-privilege-escalation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-56183 · Severity: high · CVSS 7 · Published 2026-07-14

A security vulnerability exists in the Windows MIDI Service, which handles musical instrument digital interface communications. An attacker who already has basic access to a computer could exploit this flaw to gain full administrative control over the system. This could allow them to install malicious software, view or delete sensitive data, or disrupt business operations.

Technologies: [Microsoft Windows 11](https://junglewise.ai/threats/technologies/windows-11). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-56183 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56183 being exploited in the wild.

**How severe is CVE-2026-56183?** High severity, with a CVSS score of 7, published 14 July 2026.

**Which products and versions are affected?** Microsoft Windows 11 10.0.26100.0 to 10.0.26100.8875.

**Is there a fix for CVE-2026-56183?** 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-2026-56183 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-56183?** Check whether you run Microsoft Windows 11 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 use-after-free (CWE-416) vulnerability exists within the Windows MIDI Service Module. The flaw is triggered when the service improperly handles objects in memory, allowing an attacker to reference memory after it has been freed. To exploit this, an attacker must first have local access to the system with low-level user privileges. Successful exploitation allows the attacker to execute code with elevated privileges, potentially gaining SYSTEM-level access. Microsoft has released security updates to address this issue across affected versions of Windows 11.

## Affected products

- Microsoft Windows 11 Version 24H2 10.0.26100.0 to 10.0.26100.8875
- Microsoft Windows 11 Version 25H2 10.0.26200.0 to 10.0.26200.8875
- Microsoft Windows 11 version 26H1 10.0.28000.0 to 10.0.28000.2269

## Timeline

- 2026-07-14: disclosed
- 2026-07-14: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56183](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56183)

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