CVE-2026-56187: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-56187) involves a use-after-free condition in the Windows MIDI Service Module on Windows 11 Version 24H2 (build 10.0.26100.0). Exploitation requires local access with authorized privileges and can result in privilege escalation. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges but no user interaction. Confidentiality, integrity, and availability impacts are all high. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges, potentially gaining higher system rights than intended. This can lead to full system compromise, including unauthorized access to sensitive data and system control.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56187 to remediate this vulnerability.
CVE-2026-56187: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Description
Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-56187) involves a use-after-free condition in the Windows MIDI Service Module on Windows 11 Version 24H2 (build 10.0.26100.0). Exploitation requires local access with authorized privileges and can result in privilege escalation. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges but no user interaction. Confidentiality, integrity, and availability impacts are all high. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges, potentially gaining higher system rights than intended. This can lead to full system compromise, including unauthorized access to sensitive data and system control.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56187 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-19T13:54:04.006Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56187","vendor":"Microsoft"}]
Threat ID: 6a5676ba68715ace43f0ae9f
Added to database: 07/14/2026, 17:49:46 UTC
Last enriched: 08/13/2026, 15:48:40 UTC
Last updated: 08/26/2026, 22:52:11 UTC
Views: 36
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