EUVD-2026-73568
GHSA-g85v-8448-3x69
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local low-privilege user triggers heap overflow with no user interaction; full C/I/A impact from privilege escalation; scope unchanged consistent with user-mode service.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in the Windows MIDI Service Module enables a local authenticated attacker on Windows 11 to escalate privileges, with full confidentiality, integrity, and availability impact in the compromised process scope. Affected builds span three servicing tracks - 24H2, 25H2, and 26H1 - with fixed builds published by Microsoft through MSRC. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local, authenticated low-privileged user account (PR:L) on a Windows 11 system running version 24H2, 25H2, or 26H1 with a build number below the patched threshold. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a local privilege escalation profile with low exploitation complexity from any standard user account and full C/I/A impact. … 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 delivering Windows 11 24H2/25H2 to build 10.0.26100.9445 or 10.0.26200.9445 and Windows 11 26H1 to build 10.0.28000.2954, available via Windows Update, WSUS, and the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69720. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows 11 systems running builds 24H2, 25H2, or 26H1 and consult the Microsoft MSRC advisory for specific patch versions. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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