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CVE-2026-56183 Microsoft CVE debrief

CVE-2026-56183 is a high-severity vulnerability in Windows MIDI Service Module that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7 and is classified as HIGH. Microsoft is the affected vendor. The vulnerability is a use-after-free issue in the Windows MIDI Service Module. System administrators and users of affected systems should be aware of this vulnerability and take necessary precautions.

Vendor
Microsoft
Product
Windows 11 Version 24H2
CVSS
HIGH 7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-22
Advisory published
2026-07-14
Advisory updated
2026-07-22

Who should care

System administrators and users of Windows 11 24H2, Windows 11 25H2, and Windows 11 26H1 should be aware of this vulnerability and take necessary precautions. Security teams should review system configurations and monitor for suspicious activity.

Technical summary

The vulnerability is a use-after-free issue in the Windows MIDI Service Module. An authorized attacker can exploit this vulnerability to elevate privileges locally. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability affects Windows 11 24H2, Windows 11 25H2, and Windows 11 26H1.

Defensive priority

High priority should be given to patching this vulnerability as it allows for local privilege escalation.

Recommended defensive actions

  • Apply the patch provided by Microsoft
  • Ensure that Windows 11 24H2, Windows 11 25H2, and Windows 11 26H1 systems are updated with the latest security patches
  • Monitor systems for suspicious activity
  • Implement compensating controls such as restricting access to sensitive areas
  • Review system configurations for potential exposure

Evidence notes

The CVE record was published on 2026-07-14T18:18:28.063Z and was last modified on 2026-07-22T10:43:29.300Z. The NVD entry is currently Analyzed. The vulnerability affects Windows 11 24H2, Windows 11 25H2, and Windows 11 26H1. Evidence of exploitation is not currently available. Defenders should verify system configurations and monitor for suspicious activity.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-14T18:18:28.063Z and has not been modified since then. The NVD entry is currently Analyzed.