CVE-2026-88079: CWE-476: NULL Pointer Dereference in Microsoft Windows 11 Version 24H2

This vulnerability (CVE-2026-88079) is a null pointer dereference in the Windows MIDI Service Module on Microsoft Windows 11 Version 24H2. It allows an attacker with local authorized access to elevate privileges on the affected system. The CVSS 3.1 base score is 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.

An authorized local attacker can exploit this null pointer dereference vulnerability to elevate their privileges, potentially gaining higher-level access to the system. This can lead to full system compromise affecting confidentiality, integrity, and availability of the affected Windows 11 system.

An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88079. No additional mitigation steps are indicated beyond applying the official patch.