EUVD-2026-73725
GHSA-g7jx-wvmx-w3jp
Severity by source
AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Local access with existing admin rights required; scope change into VTL 1 secure kernel justifies S:C and full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in Windows Secure Kernel Mode enables an authorized local attacker with administrative privileges to escalate into the secure kernel isolation boundary, achieving full confidentiality, integrity, and availability impact (S:C, C:H/I:H/A:H). The vulnerability spans a broad range of Windows platforms - from Server 2016 and Windows 10 1607 through Windows 11 26H1 and Server 2025 - and was reported by Microsoft's own security engineering team. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local access to the target host and an account with high-privilege (administrator-level) rights - confirmed by CVSS AV:L/PR:H. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Despite the CVSS 8.2 score, real-world exploitation risk is tempered by several factors. … 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 your Windows build version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows systems running Server 2016, Windows 10 (1607 and later), Windows 11, or Server 2025; prioritize production servers, domain controllers, and privileged workstations. …
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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
Leaving vuln.today