EUVD-2026-73600
GHSA-5vw9-rc6m-4rr9
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Local access with low privileges sufficient; read-only over-read yields confidentiality impact only, with no integrity or availability effect.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Buffer over-read in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information locally.
AnalysisAI
Windows Encrypting File System (EFS) exposes sensitive memory contents to local low-privileged attackers via a buffer over-read (CWE-126) in its driver or associated components. Affected systems span the entire current Windows ecosystem including Server 2016 through 2025 and Windows 10/11 across multiple feature release channels. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid local user account on the affected Windows system (PR:L); unauthenticated remote exploitation is not possible given AV:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 5.5 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) accurately reflects the threat model: exploitation requires a valid local user account, but once authenticated no special configuration or user interaction is needed. … 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 vendor-released patches distributed through Windows Update or WSUS for the respective build numbers listed above (e.g., Server 2022 to build 10.0.20348.5622 or later, Windows 11 24H2/25H2 to 10.0.26100.9445 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-126 – Buffer Over-read
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External POC / Exploit Code
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