EUVD-2026-73707
GHSA-8783-v85r-fr8x
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L because exploitation requires local session access; AC:H for UAF race-condition requirement; PR:L since any authenticated local user suffices; full C/I/A impact upon successful kernel privilege escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Use after free in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Storage Spaces Controller via a use-after-free memory corruption flaw enables an authenticated low-privilege attacker to gain SYSTEM-level access on affected Windows 10, Windows 11, and Windows Server 2016 through 2025 installations. The vulnerability (CWE-416) exists in the Storage Spaces Controller kernel driver; exploiting it yields full confidentiality, integrity, and availability impact on the local system. …
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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 target Windows system - the CVSS vector specifies PR:L (low privilege), meaning any standard domain or local user account is sufficient; no administrator rights are needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects the local, authenticated nature of this flaw - it cannot be exploited remotely. … 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 Microsoft Update Catalog; the patch brings each affected build to or above the fixed thresholds listed in the affected products section (e.g., Windows Server 2025 to 10.0.26100.33438, Windows 10 22H2 to 10.0.19045.7725). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, Windows 11, and Windows Server 2016-2025 systems in your environment to establish baseline affected asset count. …
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Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
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External POC / Exploit Code
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