EUVD-2026-73075
GHSA-m7hf-cqqm-r9c3
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local low-privilege user required (AV:L/PR:L); AC:L as no race condition or configuration dependency described; S:U since impact is confined to the exploited host despite kernel-level access.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in the Windows Win32 Kernel Subsystem enables local privilege escalation to SYSTEM across a wide range of Microsoft Windows client and server editions. An authenticated low-privilege local user can trigger the overflow with low attack complexity and no user interaction, achieving full confidentiality, integrity, and availability compromise (C:H/I:H/A:H) on the affected host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to have local code execution as a standard low-privilege user (PR:L) on an affected Windows system - there is no remote attack path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score accurately reflects the local-only attack vector (AV:L) that prevents direct remote exploitation. … 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 via Windows Update, Windows Server Update Services (WSUS), or the Microsoft Update Catalog targeting the fixed builds per edition: Windows Server 2025 and Windows 11 24H2 to 10.0.26100.33438/9445, Windows 11 23H2 to 10.0.22631.7582, Windows 11 25H2 to 10.0.26200.9445, Windows 11 26H1 to 10.0.28000.2954, Windows Server 2022 to 10.0.20348.5622, Windows Server 2019 and Windows 10 1809 to 10.0.17763.9245, Windows 10 21H2 to 10.0.19044.7725, Windows 10 22H2 to 10.0.19045.7725, Windows Server 2016 and Windows 10 1607 to 10.0.14393.9512, Windows Server 2012 to 6.2.9200.26349, and Windows Server 2012 R2 to 6.3.9600.23397. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows systems in your environment and confirm access to Microsoft's security patch through your update management system. …
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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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