EUVD-2026-73558
GHSA-7phw-62w7-j3f5
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low privilege and high complexity matches a kernel OOB-read LPE chain; full C/I/A impact reflects SYSTEM-level escalation upon success.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Win32K allows a low-privileged authenticated user to gain SYSTEM-level access via an out-of-bounds read in the kernel graphics subsystem. The flaw spans a remarkably wide surface - Windows Server 2012 through Server 2025 and every current Windows 10/11 feature release - making it broadly relevant across enterprise patch cycles. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local session with at least low-privilege access - the attacker must be able to execute code on the machine via interactive logon, Remote Desktop Protocol, or a pre-existing foothold shell. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score with AV:L/AC:H/PR:L reflects a post-authentication local exploit requiring elevated technical complexity - not a push-button remote attack. … 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 security update corresponding to each deployed Windows version as identified in EUVD-2026-73558 and the MSRC update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69630. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server 2012-2025 and Windows 10/11 systems in production environments to establish baseline patch scope. …
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Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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