EUVD-2026-73759
GHSA-32g4-vcq2-fp5g
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local standard-user access required (AV:L/PR:L); no complexity barrier or user interaction; scope unchanged; full C/I/A on local system upon successful heap overflow exploitation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in the Windows Biometric Service (WBF) enables a locally authenticated attacker to escalate privileges to SYSTEM on a wide range of Windows desktop and server versions. The flaw (CWE-122) is reachable by any standard user account and requires no user interaction, yielding full confidentiality, integrity, and availability compromise on the vulnerable host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local access with at least standard (non-administrative) user privileges on the target machine-consistent with CVSS PR:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 7.8 score with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H accurately characterizes this as a high-severity local privilege escalation. … 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 security update addressing CVE-2026-73001, available through Windows Update, Windows Server Update Services (WSUS), and the Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, assess your Windows environment to identify systems running Windows Biometric Service, focusing on inventory of affected desktop and server versions and their criticality. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
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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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