EUVD-2026-73780
GHSA-64j9-9r8w-3727
Severity by source
AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Local-only vector, high complexity for heap exploitation precision, high privileges required per 'authorized attacker' description, scope changes to kernel context justifying S:C and full CIA.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Graphics Kernel allows an authorized attacker to execute code locally.
AnalysisAI
Heap-based buffer overflow in the Windows Graphics Kernel subsystem allows a locally authenticated, high-privileged attacker to execute arbitrary code with scope change to kernel context. The vulnerability affects a wide swath of Windows 10, Windows 11, and Windows Server releases from build 1809 through Server 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authorized attacker with high local privileges (PR:H) already present on the system - unauthenticated or remote exploitation is not possible per the AV:L/PR:H CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor-assigned CVSS 3.1 score of 7.5 with vector AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H reflects a constrained but high-impact flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft security update for your specific Windows build as identified through Windows Update or WSUS; exact patched build numbers are listed per-version in the affected products section above. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10 (build 1809+), Windows 11, Windows Server 2022, and Windows Server 2025 systems and prioritize those where administrative access is broad or data exposure is high. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
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External POC / Exploit Code
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