EUVD-2026-73017
GHSA-rp4g-fjwh-xr8v
Severity by source
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-reachable Hyper-V surface with low-privilege authenticated attacker; high complexity and required user interaction constrain opportunistic exploitation; full triad impact on successful exploitation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Missing authorization in Windows Hyper-V allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation in Windows Hyper-V allows a network-adjacent low-privileged attacker to gain full system control (C:H/I:H/A:H) by exploiting a missing authorization check. The flaw, rooted in CWE-862 (Missing Authorization), requires the attacker to already hold a low-privilege account and to trigger user interaction, placing it at CVSS 7.1 with high complexity. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to possess a valid low-privileged Windows account (PR:L) - unauthenticated exploitation is not possible per the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.1 rating with vector AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H reflects genuine but conditional risk. … 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-released security update to the affected Windows build as the primary fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and prioritize all Hyper-V deployments across Windows 10, 11, and Server editions in your environment. …
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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