EUVD-2026-72998
GHSA-p893-g2v5-3536
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network vector via SMB-accessible NTFS; PR:L for required authorized attacker; UI:R for victim-triggered file/share access; full C/I/A impact from SYSTEM-level privilege escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation via out-of-bounds read in Windows NTFS affects a broad range of Windows client and server releases, from Windows Server 2012 through Windows 11 26H1 and Windows Server 2025. An authorized (low-privilege) network attacker who can trigger specific NTFS parsing behavior - requiring user interaction - can achieve full compromise of confidentiality, integrity, and availability, effectively gaining system-level access. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the attacker holds low-privilege network credentials (PR:L) or can persuade an authenticated user to act; (2) user interaction is required (UI:R) - the victim must access an attacker-controlled or attacker-influenced NTFS resource, e.g., open a file from a malicious SMB share or mount a crafted volume; (3) the target is running an unpatched Windows version in the affected range. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 8.0 (AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H) reflects a network-reachable, low-complexity flaw requiring low-privilege authentication and user interaction - consistent with a scenario where a logged-in user browses a malicious network share or opens a crafted file. … 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 patches for each affected Windows version via Windows Update or WSUS; exact build targets are listed in the affected versions data above (e.g., Windows Server 2025 to build 10.0.26100.33438 or later, Windows 11 24H2/25H2 to 10.0.26100.9445 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and document all Windows Server 2012, 2016, 2019, 2022, and 2025 systems plus Windows 11 deployments in your environment to establish remediation scope. …
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Privilege Escalation
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External POC / Exploit Code
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