EUVD-2026-72975
GHSA-55wc-4966-gx6x
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low-privilege account required; kernel heap overflow yields full SYSTEM control with no interaction needed.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Heap-based buffer overflow in Volume Manager Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation to SYSTEM via heap-based buffer overflow in the Windows Volume Manager Driver (a kernel-mode component) affects virtually every supported Windows client and server release, from Windows Server 2012 through Windows 11 26H1 and Windows Server 2025. An attacker with an existing low-privileged local account can trigger the overflow to corrupt kernel heap structures and gain full SYSTEM-level control without any user interaction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have an existing authenticated local session on the target Windows system with at least a standard (low-privileged) user account - this is confirmed by the CVSS PR:L metric. … 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 accurately characterizes a well-understood local privilege escalation class: any low-privileged account on an affected system can exploit this deterministically, with no user interaction and low complexity. … 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 | The primary remediation is applying the vendor-released patches via Windows Update or WSUS, targeting the specific build thresholds listed per OS version above (e.g., Windows 11 24H2 to 10.0.26100.9445 or later, Windows Server 2025 to 10.0.26100.33438 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all Windows Server 2012 through 2025 and Windows 11 client systems across your infrastructure using automated asset management tools; prioritize production servers and administrative workstations. …
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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
Leaving vuln.today