EUVD-2026-73751
GHSA-72p8-vqm8-f7pc
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local service IPC exploit requires only existing low-privilege account (PR:L, AV:L); no interaction needed; full system compromise after privilege escalation (C:H/I:H/A:H).
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 enables local privilege escalation to SYSTEM-level access across a wide range of Windows client and server releases. Any low-privileged, authorized local user can trigger the overflow without user interaction, yielding full confidentiality, integrity, and availability compromise of the affected host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an existing low-privilege authenticated account on the target Windows system (CVSS PR:L confirmed). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score correctly captures the local-only attack surface (AV:L, PR:L), which limits network-based mass exploitation but does not reduce real-world severity once an attacker has any foothold on a target system. … 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 updates corresponding to each affected Windows release: update Windows 10 1607 and Server 2016 to build 10.0.14393.9512 or later; Windows 10 1809 and Server 2019 to 10.0.17763.9245 or later; Windows 10 21H2 to 10.0.19044.7725 or later; Windows 10 22H2 to 10.0.19045.7725 or later; Windows 11 23H2 to 10.0.22631.7582 or later; Windows 11 24H2 to 10.0.26100.9445 or later; Windows 11 25H2 to 10.0.26200.9445 or later; Windows 11 26H1 to 10.0.28000.2954 or later; Server 2022 to 10.0.20348.5622 or later; Server 2025 to 10.0.26100.33438 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and assess affected Windows systems across client and server infrastructure; prioritize critical systems, servers, and administrative workstations. …
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Same weakness CWE-20 – Improper Input Validation
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today