EUVD-2026-43830
GHSA-f5f3-vw5v-wr8f
Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Local vector confirmed by description; PR:N accepted as any process context can trigger; C:H reflects significant memory disclosure with no I or A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
Exposure of sensitive information to an unauthorized actor in Windows DirectX allows an unauthorized attacker to disclose information locally.
AnalysisAI
Local information disclosure in Windows DirectX exposes sensitive data to unauthorized local actors across a broad range of Windows 10, Windows 11, and Windows Server versions. The vulnerability (CWE-200) achieves high confidentiality impact per the CVSS vector while producing no integrity or availability impact, meaning an attacker gains read access to protected data without disrupting system operation. No public exploit has been identified at time of analysis; EPSS at 0.38% (30th percentile) and SSVC exploitation status of 'none' collectively indicate low near-term exploitation probability despite the wide affected surface.
Technical ContextAI
Windows DirectX is Microsoft's suite of multimedia APIs - encompassing Direct3D, DirectCompute, and associated kernel-mode drivers - deeply embedded in every modern Windows installation for graphics, gaming, and GPU-accelerated workloads. CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) indicates the root cause is the DirectX subsystem improperly surfacing memory contents - potentially kernel structures, hardware abstraction layer buffers, or GPU memory - to a process or execution context that should not have visibility into that data. The CVSS vector AV:L/PR:N implies that any local execution context, potentially including low-integrity or sandboxed processes, can trigger the disclosure without requiring any special system privileges. Affected CPEs span the microsoft:windows_10_version_* and microsoft:windows_11_version_* application families as well as windows_server_2019, windows_server_2022, and windows_server_2025, confirming the flaw is in a shared DirectX component present across the entire modern Windows product line rather than an isolated edition-specific feature.
RemediationAI
Apply the Microsoft-released patches that bring affected builds to or above the fixed thresholds listed in the EUVD data: Windows Server 2019 and Windows 10 1809 to 10.0.17763.9020 or later; Windows 10 21H2 to 10.0.19044.7548 or later; Windows 10 22H2 to 10.0.19045.7548 or later; Windows Server 2022 to 10.0.20348.5386 or later; Windows 11 24H2 and Windows Server 2025 to 10.0.26100.33158 or later; Windows 11 25H2 to 10.0.26200.8875 or later; Windows 11 26H1 to 10.0.28000.2269 or later. The authoritative update guidance is available at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49807. As a compensating control where immediate patching is not feasible, restrict local interactive and RDP logon rights to trusted accounts only, and apply application allowlisting (via Windows Defender Application Control) to limit which processes can invoke DirectX kernel interfaces - this raises the effective privilege bar even where PR:N is the official vector. Note that disabling DirectX entirely is not a practical workaround given its integration with the graphics subsystem and would break normal OS function.
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Same weakness CWE-200 – Information Exposure
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today