EUVD-2026-73539
GHSA-9h44-2fpp-gm5f
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Network vector confirmed by description; PR:L matches 'authorized attacker'; UI:R required for victim to access crafted structure; confidentiality-only impact with no integrity or availability effects.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read in the Windows NTFS filesystem driver allows a low-privilege authenticated attacker to disclose sensitive memory contents over a network. Affected across a broad swath of Windows 10, Windows 11, and Windows Server releases from 2019 through 2025, this vulnerability requires victim user interaction (UI:R) to trigger, likely via a specially crafted NTFS volume or file accessed over a network path such as an SMB share. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the attacker holds at least low-level authenticated access to a network resource reachable by the victim (PR:L - 'authorized attacker' per description); (2) the victim user must actively interact with a crafted NTFS structure (UI:R), such as browsing to a malicious SMB share or opening a crafted file; (3) the target must be running an unpatched Windows build from the affected ranges. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.7 (Medium) reflects a meaningful but bounded risk: network-reachable (AV:N), low complexity (AC:L), requiring low privileges (PR:L, consistent with 'authorized attacker' phrasing) and user interaction (UI:R). … 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 addressing this vulnerability, available through Windows Update, WSUS, or the Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
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External POC / Exploit Code
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