CVE-2026-83991EPSS p20.9%

CVE-2026-83991CVE-2026-83991

microsoft / windows_10_1809

Description

Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an authorized attacker to perform tampering locally.

Scoring

CVSS 5.5 ()
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS0.30% probability of exploitation · percentile 20.9% · 2026-10-05T12:00:23Z
Last modified2026-09-09
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.