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High severity7.8NVD Advisory· Published Nov 10, 2026· Updated Nov 10, 2026

CVE-2026-88239

CVE-2026-88239

Description

Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.

Affected products

1

Microsoft/Windows Biometric Servicellm-fuzzy

Patches

Vulnerability mechanics

References

1

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88239nvd

News mentions

1

Microsoft November 2026 Patch Tuesday Fixes 1,093 Vulnerabilities, Including Outlook Zero-Day
Cyber Security News · Nov 10, 2026