EUVD-2026-73491
GHSA-r2cc-5cx3-rw9m
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low privilege sufficient; kernel compromise gives full C/I/A; no interaction or elevated starting privilege required.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Volume Manager Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in the Windows Volume Manager Driver allows a local authenticated user to gain SYSTEM-level access via an integer overflow/wraparound in the kernel-mode driver. The vulnerability spans virtually every supported and extended-support Windows release, from Windows Server 2012 through Windows Server 2025 and Windows 11 26H1. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an existing authenticated low-privilege local user account on the target system - a standard Windows user session is sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 base score reflects realistic severity: AV:L limits the attack surface to local access, but AC:L/PR:L/UI:N means any standard user account on any unpatched Windows system is a viable launch point. … 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 Cumulative Updates for each affected OS version via Windows Update, WSUS, or Microsoft Update Catalog, targeting the minimum fixed builds listed above. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify and inventory all Windows Server 2012-2025 and Windows 11 26H1 systems; flag internet-facing and mission-critical infrastructure for immediate patching priority. …
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Buffer Overflow
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External POC / Exploit Code
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