EUVD-2026-73670
GHSA-cc6f-2pj8-8xmw
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-accessible OOB read triggered via malicious remote resource with mandatory user interaction; kernel memory disclosure justifies C:H; read-only flaw means I:N and A:N.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Out-of-bounds read in Windows Spaceport.sys allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read in Spaceport.sys, the Windows Storage Spaces kernel-mode driver, enables network-accessible information disclosure across Windows 10, 11, and Server editions from 2012 R2 through 2025. Exploitation requires user interaction (UI:R per CVSS vector), meaning an attacker must induce a victim to access malicious content - such as a crafted remote storage resource - to trigger the read beyond the allocated buffer and leak kernel memory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a victim user on an unpatched Windows system to actively connect to or process data from an attacker-controlled network storage resource, as mandated by UI:R in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) positions this as a moderate-severity, network-accessible information disclosure requiring user interaction, which substantially limits its exploitability compared to fully unauthenticated, fully automated flaws. … 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 cumulative update for the applicable Windows version through Windows Update, WSUS, or Microsoft Update Catalog immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Information Disclosure
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External POC / Exploit Code
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