EUVD-2026-56352
GHSA-93c2-32w5-75m9
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local kernel driver LPE requires only a standard user session (PR:L, AV:L); low complexity and no user interaction; full C/I/A impact at SYSTEM level.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation via heap-based buffer overflow in the Windows Cloud Files Mini Filter Driver (cldflt.sys) allows a low-privileged local attacker to gain full SYSTEM-level control on affected Windows endpoints and servers. The vulnerability spans virtually all supported Windows versions, from Windows 10 1809 and Server 2019 through Windows 11 26H1 and Server 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an existing local authenticated session with at least standard user (low-privilege) access, as reflected by PR:L in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H scores 7.8, accurately reflecting a local privilege escalation requiring only a standard user account with no user interaction and low complexity. … 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 cumulative updates from Microsoft that bring affected builds to or above the following fixed versions: Windows 10 1809 and Server 2019 to build 10.0.17763.9115 or later; Windows 10 21H2 to 10.0.19044.7663; Windows 10 22H2 to 10.0.19045.7663; Windows 11 23H2 to 10.0.22631.7517; Windows 11 24H2 to 10.0.26100.9168; Windows 11 25H2 to 10.0.26200.9168; Windows 11 26H1 to 10.0.28000.2704; Windows Server 2022 to 10.0.20348.5499; Windows Server 2025 to 10.0.26100.33296. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows endpoints and servers in your environment and document which ones have Cloud Files enabled or installed. …
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External POC / Exploit Code
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