EUVD-2026-73766
GHSA-7wjx-qjxj-335r
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Local authenticated access required, no complexity barriers, confidentiality-only impact on biometric PII; no integrity or availability impact identified.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Exposure of private personal information to an unauthorized actor in Windows Biometric Service allows an authorized attacker to disclose information locally.
AnalysisAI
Information disclosure in the Windows Biometric Service exposes private personal information to locally authenticated, low-privilege attackers without requiring user interaction. The flaw, rooted in CWE-359, affects a broad swath of Windows versions from Server 2016 through Windows 11 26H1 and Server 2025, giving an authenticated local user unauthorized read access to biometric-related PII managed by the service. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a locally authenticated user-level session on an affected Windows machine - no elevated privileges are needed (PR:L in CVSS confirms this). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.5 score is consistent with the local-only, confidentiality-only nature of this finding. … 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 | Vendor-released patch: Apply the Microsoft Patch Tuesday security updates that bring each affected Windows version to or above the fixed build thresholds listed in the EUVD advisory (e.g., Windows Server 2019 to 10.0.17763.9245, Windows 11 24H2 to 10.0.26100.9445, Windows Server 2025 to 10.0.26100.33438 - see full list in affected_products). … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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