EUVD-2026-73098
GHSA-83j4-g4c4-2577
Severity by source
AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Physical presence mandatory per description and CVSS vector; no privileges or user interaction required once physically present; kernel-mode driver overflow yields full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Spaceport.sys allows an unauthorized attacker to execute code with a physical attack.
AnalysisAI
Heap-based buffer overflow in Windows Spaceport.sys, the kernel-mode Storage Spaces port driver, allows an attacker with physical access to execute arbitrary code at kernel privilege across a wide range of Windows 10, Windows 11, and Windows Server releases. The vulnerability (CWE-122) results in full confidentiality, integrity, and availability compromise of the affected system upon successful exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Physical access to the target machine is the primary and mandatory requirement, as established by the CVSS AV:P (physical) attack vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 6.8 accurately reflects the physical attack vector (AV:P), which dramatically narrows the realistic attacker pool compared to network-accessible vulnerabilities carrying identical impact ratings. … 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 | Vendor-released patch is available from Microsoft. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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