CVE-2026-83991 — Windows Cloud Files Mini Filter Driver Tampering Vulnerability

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

Published: 2026-09-08 · CVSS: 5.5 · CVSS 3.1

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

Original CVE JSON · STIX 2.1

Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7