EUVD-2026-22418
GHSA-whvh-93vh-g249
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionCVE.org
Integer size truncation in Windows Advanced Rasterization Platform (WARP) allows an unauthorized attacker to elevate privileges locally.
AnalysisAI
Integer size truncation in Windows Advanced Rasterization Platform (WARP) enables unauthenticated remote attackers to achieve code execution with elevated privileges across Windows 10, 11, and Server editions by persuading users to interact with malicious content. Microsoft has released security updates addressing this vulnerability across all supported Windows versions. No public exploit identified at time of analysis, though the unauthenticated remote attack vector (CVSS AV:N/PR:N) combined wi
Technical ContextAI
Windows Advanced Rasterization Platform (WARP) is a software-based Direct3D rasterizer used as a fallback rendering mechanism when hardware acceleration is unavailable. The vulnerability stems from CWE-681 (Incorrect Conversion between Numeric Types), where integer size truncation occurs during graphics processing operations. When WARP handles specially crafted rendering commands or shader instructions, an integer value is improperly converted between different numeric types (likely downcasting from larger to smaller integer type without proper bounds checking). This truncation can cause memory corruption during buffer size calculations or index operations, enabling attackers to control memory layout and execute arbitrary code. The flaw affects the core graphics rendering pipeline present across the entire modern Windows ecosystem, spanning client and server SKUs from Windows 10 1607 (released 2016) through Windows Server 2025 and Windows 11 25H2.
RemediationAI
Apply Microsoft security updates immediately to upgrade affected systems to patched builds: Windows 10 1607 to 10.0.14393.9060 or later, Windows 10 1809 to 10.0.17763.8644 or later, Windows 10 21H2 to 10.0.19044.7184 or later, Windows 10 22H2 to 10.0.19045.7184 or later, Windows 11 22H3/23H2 to 10.0.22631.6936 or later, Windows 11 24H2 to 10.0.26100.32690 or later, Windows 11 25H2 to 10.0.26200.8246 or later, Windows Server 2016 to 10.0.14393.9060 or later, Windows Server 2019 to 10.0.17763.8644 or later, Windows Server 2022 to 10.0.20348.5020 or later, Windows Server 2022 23H2 to 10.0.25398.2274 or later, and Windows Server 2025 to 10.0.26100.32690 or later. Deploy patches through Windows Update, WSUS, or Microsoft Update Catalog. As interim risk reduction while testing patches, implement application whitelisting to restrict execution of untrusted content, enforce Protected View in Office applications for documents from untrusted sources, and enhance email security filtering to block malicious attachments targeting graphics rendering subsystems. Official remediation guidance available at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26178.
Same weakness CWE-681 – Incorrect Conversion between Numeric Types
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today