EUVD-2026-73649
GHSA-2gp8-chr8-qjrm
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low (non-zero) privileges required; out-of-bounds read in kernel driver enables full SYSTEM escalation with commensurate C/I/A:H impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Spaceport.sys - the kernel-mode Storage Spaces driver - allows a low-privileged authenticated local user to achieve SYSTEM-level control on Windows 11 and Windows Server 2022/2025 systems. The driver performs an out-of-bounds read (CWE-125) that can expose kernel memory contents and serve as a stepping stone to full kernel-level code execution, yielding high confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local account with at minimum standard user (non-administrator) privileges, consistent with the CVSS PR:L metric. … 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, score 7.8) accurately characterizes the exploitation profile: a low-privileged local account, no user interaction, low complexity, and full kernel-level impact post-exploitation. … 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 security update via Windows Update or the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70569. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit your Windows 11 and Windows Server 2022/2025 inventory to identify systems with local user access (including RDP, terminal services, or multi-user scenarios) and classify by criticality. …
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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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