EUVD-2026-56667
GHSA-v82h-rj8p-g4jj
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Local low-privilege access required to invoke Win32K APIs; disclosure-only impact with no integrity or availability effect; consistent with vendor-provided vector.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
3DescriptionCVE.org
Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.
AnalysisAI
Out-of-bounds read in the Windows Win32K kernel graphics subsystem allows any locally authenticated low-privilege user to disclose sensitive kernel memory contents without user interaction. The flaw spans an exceptionally broad range of affected Windows versions, from Server 2012 through Windows 11 25H2, significantly widening enterprise exposure. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local session with at minimum low-privilege credentials - confirmed by the CVSS vector PR:L and AV:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD CVSS score of 5.5 (Medium) accurately reflects the constrained attack surface: local access is required (AV:L), exploitation complexity is low (AC:L), only low-privilege credentials are needed (PR:L), no user interaction is required (UI:N), and impact is limited to confidentiality (C:H/I:N/A:N) with no scope change (S:U). … 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 for CVE-2026-62786, available via Windows Update, WSUS, or directly from the Microsoft Security Response Center at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62786. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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