EUVD-2026-73485
GHSA-fmmv-5hq4-xhqp
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Network-triggerable OOB read requiring authenticated low-privilege user and user interaction; read-only impact yields C:H with 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 authorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read in the Windows kernel-mode driver Spaceport.sys allows an authenticated low-privileged attacker to disclose high-impact memory contents over a network, affecting all supported Windows versions from Server 2016 through Windows 11 26H1. Exploitation requires a low-privilege account and some form of user interaction (per CVSS PR:L/UI:R), limiting the practical attack surface compared to fully unauthenticated flaws. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Attacker must hold at minimum a low-privileged authenticated account on the target system (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.7 Medium score accurately reflects the meaningful access prerequisites: authentication at low privilege (PR:L) and user interaction (UI:R) both constrain opportunistic 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 through Windows Update, WSUS, or Microsoft Update Catalog. … 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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