EUVD-2026-73544
GHSA-hqw2-6mj8-fhqx
Severity by source
AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Physical media required to trigger NTFS parsing; no credentials needed once device is accessed; kernel-mode execution yields full C/I/A impact without scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code with a physical attack.
AnalysisAI
Heap-based buffer overflow in the Windows NTFS kernel driver enables an unauthenticated attacker with physical device access to execute arbitrary code at kernel privilege level. Affected products span virtually the entire supported Windows ecosystem from Server 2012 through Windows Server 2025 and Windows 11 26H1. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Physical device access is the mandatory prerequisite (CVSS AV:P) - the attacker must be able to connect external storage media or interact directly with the device's storage interface. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Despite the high C:H/I:H/A:H impact triad, the Physical attack vector (AV:P) is the dominant risk-shaping factor here, confining realistic exploitation to theft, insider, 'evil maid', or border/customs inspection scenarios against individual devices rather than network-wide campaigns. … 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-released security update corresponding to each affected Windows version via Windows Update, WSUS, or the Microsoft Update Catalog, targeting the fixed build numbers listed above (e.g., Windows Server 2025 to 10.0.26100.33438 or later, Windows 11 24H2 to 10.0.26100.9445 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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