EUVD-2026-43937
GHSA-m7r7-9v2w-rjcg
Severity by source
AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Local, low-privilege trigger with no user interaction; a kernel DirectX pointer dereference yielding code execution justifies S:C and full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
Untrusted pointer dereference in Windows DirectX allows an authorized attacker to execute code locally.
AnalysisAI
Local code execution in the Windows DirectX graphics component (CVE-2026-50382) lets an already-authenticated user run arbitrary code and, because the CVSS scope is Changed, break out of the calling security context to compromise the wider system. It affects a broad range of Windows client and server builds from Windows 10 1809 through Windows 11 26H1 and Windows Server 2019 through 2025. Microsoft has issued a patch; there is no public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV.
Technical ContextAI
DirectX is the low-level multimedia/graphics API stack built into Windows (including kernel-mode graphics components such as the DirectX Graphics Kernel), used for rendering, GPU access, and hardware acceleration. The root cause is classified as CWE-822 (Untrusted Pointer Dereference): the component uses a pointer value that is influenced or supplied by an untrusted source without proper validation, so it dereferences an attacker-influenced address. In a kernel graphics component this typically means an attacker-controlled offset or handle is trusted as a valid memory location, enabling memory corruption that can be steered into arbitrary code execution. The CPE set confirms the affected code is present across the full supported Windows 10/11 and Windows Server 2019-2025 line, consistent with DirectX being a core OS subsystem rather than an add-on.
RemediationAI
Patch available per vendor advisory: apply the Microsoft security update for CVE-2026-50382 for your specific Windows build via Windows Update or WSUS/SCCM, using the guidance at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50382 (the input confirms a fix is available from the vendor but does not specify exact KB/build numbers, so map your SKU to the correct KB on that page). Because exploitation requires local, authenticated access, the most effective compensating control until patching is to limit who can run code on the host: enforce least privilege and remove unnecessary interactive/standard-user logon rights on servers, restrict access to high-value systems (domain controllers, RDP/session hosts) to trusted administrators, and monitor for unexpected privilege escalation; note these controls reduce but do not eliminate risk since any legitimate low-privileged user retains the local exploitation path. There is no documented feature toggle to disable the affected DirectX code path without impacting graphics functionality, so patching is the definitive remediation.
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Same weakness CWE-822 – Untrusted Pointer Dereference
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External POC / Exploit Code
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