EUVD-2026-73008
GHSA-6254-2rg3-ff99
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low-privilege authentication required; no complexity or interaction needed once local; full C/I/A achieved via kernel SYSTEM escalation with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Buffer over-read in Windows Volume Manager Extension Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation via a buffer over-read in the Windows Volume Manager Extension Driver enables authenticated local users to gain SYSTEM-level access across a broad range of Windows client and server releases. The flaw resides in a kernel-mode driver component where insufficient bounds checking during volume management operations allows reading beyond an allocated buffer, with the resulting memory condition exploitable to corrupt process tokens and elevate privileges. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated low-privileged local user account on the target Windows system - the attacker must already have the ability to execute code locally (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) correctly characterizes this as a locally-exploitable privilege escalation: the attacker must already hold a low-privileged authenticated session on the target machine, which constrains direct remote 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 | Apply Microsoft's security update for each affected Windows build via Windows Update, Windows Server Update Services (WSUS), or Microsoft Update Catalog; the patch thresholds per build are enumerated in the EUVD/NVD structured data and the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69582. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows systems (clients and servers) across your environment and document which versions are currently deployed to establish the scope of affected assets. …
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Same weakness CWE-126 – Buffer Over-read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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