EUVD-2026-73498
GHSA-54w5-fp6f-vvcj
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-reachable kernel OOB read requires a low-privilege account and user interaction; full C/I/A impact reflects realistic SYSTEM-level privilege escalation via kernel memory leak chain.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Out-of-bounds read in Windows VOLSNAP.SYS allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation via out-of-bounds read in VOLSNAP.SYS, the Windows Volume Shadow Copy kernel-mode driver, allows a low-privileged network attacker to achieve SYSTEM-level code execution across virtually all Windows client and server versions from Server 2012 to Server 2025. The CVSS 8.0 vector (AV:N/AC:L/PR:L/UI:R) confirms the exploit is network-reachable with low access complexity and a low-privileged account, constrained only by a user interaction requirement. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold a low-privileged authenticated account on the target Windows system or network (PR:L per CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.0 vector (AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H) represents a meaningful real-world risk: network reachability with low complexity and only a low-privileged account is a strong exploitation profile, partially offset by the UI:R requirement. … 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 security update for CVE-2026-69427 immediately via Windows Update, Microsoft Update Catalog, or WSUS; target build numbers for each affected OS version are listed in the affected_products field. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server 2012 through Server 2025 installations and Windows clients in your environment, categorizing systems by criticality and network exposure. …
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Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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