EUVD-2026-73088
GHSA-x7gw-mj7q-69m5
Severity by source
AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Physical device attachment triggers the overflow without OS credentials (PR:N); kernel code execution yields full CIA impact with no 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 allows an unauthenticated attacker with physical access to execute arbitrary code at kernel privilege on affected systems. The vulnerability spans nearly every supported Windows release from Server 2012 through Windows 11 26H1 and Windows Server 2025, and is triggered when the NTFS driver processes a specially crafted volume attached by an adversary. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires direct physical access to the target machine - the attacker must attach an external storage device (USB flash drive, external hard disk, or similar) containing a maliciously crafted NTFS volume. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 6.8 reflects a meaningful tension: full CIA impact (C:H/I:H/A:H) representing kernel-level code execution, constrained by a physical attack vector (AV:P) that dramatically narrows the attacker population to those with hands-on access. … 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 via Windows Update or the Microsoft Update Catalog, targeting the fixed builds per platform: Windows Server 2012/2012 R2 to 6.2.9200.26349/6.3.9600.23397 (note these require Extended Security Update licensing as these versions are past mainstream support); Windows Server 2016 and Windows 10 1607 to 10.0.14393.9512; Windows Server 2019 and Windows 10 1809 to 10.0.17763.9245; Windows 10 21H2 to 10.0.19044.7725; Windows 10 22H2 to 10.0.19045.7725; Windows 11 23H2 to 10.0.22631.7582; Windows Server 2022 to 10.0.20348.5622; Windows 11 24H2 and Windows Server 2025 to 10.0.26100.9445 and 10.0.26100.33438 respectively; Windows 11 25H2 to 10.0.26200.9445; Windows 11 26H1 to 10.0.28000.2954. … 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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