EUVD-2026-72964
GHSA-hrrv-7vmr-jmf8
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-reachable kernel heap overflow requiring low-privileged auth and user interaction; full impact appropriate for kernel-level privilege escalation with no scope change.
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 over a network.
AnalysisAI
Heap-based buffer overflow in Windows' Volume Manager Driver enables a low-privileged authenticated attacker to escalate privileges to SYSTEM over a network, achieving full confidentiality, integrity, and availability compromise on the target host. The flaw spans an exceptionally wide range of Microsoft Windows versions, from Server 2012 through Windows 11 26H1 and Server 2025, making remediation breadth a significant operational challenge. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold a valid low-privileged account (PR:L) on the target Windows system or domain, ruling out fully unauthenticated remote attacks. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.0 with AV:N/AC:L/PR:L/UI:R accurately captures a meaningful but not trivially weaponizable threat: exploitation requires an existing low-privileged account and some form of user interaction, which limits fully automated mass 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 | The primary remediation is applying Microsoft's vendor-released security update through Windows Update, WSUS, or SCCM/Intune, targeting the build thresholds listed per platform in the affected-products section. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows systems to identify instances of Server 2012, Server 2012 R2, Server 2016, Server 2019, Server 2022, Server 2025, Windows 10, and Windows 11 (including version 26H1), and obtain vendor-released patches from Microsoft security advisories for each affected version. …
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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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