EUVD-2026-73326
GHSA-4cg4-235c-5gm7
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack requiring low-privilege session and high-complexity race condition; full CIA impact reflects SYSTEM-level kernel privilege escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Use-after-free in the Windows Cloud Files Mini Filter Driver enables a locally authenticated low-privileged attacker to escalate privileges on affected Windows systems. The vulnerability spans a wide range of Windows versions - Windows 10 through Windows 11 26H1 and Windows Server 2019 through 2025 - making the exposed attack surface broad. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have a valid low-privilege local or RDP session on the target Windows machine (PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS base score of 7.0 with vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H accurately reflects a local privilege escalation with meaningful 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 security update via Windows Update or WSUS targeting each affected version: Windows 10 1809/Server 2019 to build 10.0.17763.9245 or later, Windows 10 21H2/22H2 to 10.0.19044.7725 or 10.0.19045.7725 or later, Windows 11 23H2 to 10.0.22631.7582 or later, Windows 11 24H2/25H2 and Server 2025 to 10.0.26100.9445 or 10.0.26100.33438 or later, Windows 11 26H1 to 10.0.28000.2954 or later, and Server 2022 to 10.0.20348.5622 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, Windows 11, and Windows Server 2019-2025 systems in your environment, particularly those with cloud sync services enabled (OneDrive, Teams, SharePoint). …
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External POC / Exploit Code
Leaving vuln.today