EUVD-2026-73015
GHSA-325x-9m7f-7q64
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local kernel driver exploitation by low-privileged user; no complexity or interaction required; full CIA impact upon SYSTEM elevation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in the Windows Virtual Hard Disk (VHD) Miniport Driver allows a low-privileged local user to escalate to SYSTEM-level privileges across a broad range of Windows desktop and server editions. The flaw (CWE-122) resides in the kernel-mode storage driver that handles VHD/VHDX virtual disk images, enabling an attacker with standard user rights to corrupt heap memory and execute arbitrary code in kernel context. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local user session - the attacker must have at least a standard (low-privileged) Windows user account on the target system (PR:L). … 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 (7.8 High) accurately reflects a local privilege escalation requiring only low-privileged access with no complexity or user interaction. … 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 corresponding to your Windows build as listed in EUVD-2026-73015 and the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69541. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows systems running affected editions (desktop and server) and classify by criticality; obtain the latest Microsoft patch for VHD Miniport Driver from Windows Update or Microsoft Security Response Center. …
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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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