EUVD-2026-73585
GHSA-2pq8-82m9-v3hg
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low privileges required; no user interaction; OOB read in kernel mode yields full system compromise, justifying C:H/I:H/A:H with scope unchanged.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Win32K - the kernel-mode graphics and windowing subsystem - allows a low-privileged local user to gain SYSTEM-level access via an out-of-bounds read (CWE-125). The vulnerability spans virtually every supported Windows release from Server 2012 through Windows 11 26H1 and Windows Server 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a low-privileged local user account (PR:L) with the ability to execute arbitrary code on the target system - no administrator or special group membership is needed beyond a standard interactive or service logon session. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 (AV:L/AC:L/PR:L/UI:N) accurately reflects a local privilege escalation requiring only a standard user account with no interaction - a realistic post-compromise or insider-threat scenario. … 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 patches immediately via Windows Update or WSUS. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Immediately inventory all Windows Server 2012+ and Windows 11 systems across your infrastructure, prioritizing critical assets such as domain controllers and internet-facing applications-this should be completed within 24 hours. …
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Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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