rootpwn

medium · CVSS v3 5.5 · CVSS v4 6.8

CVE-2026-93689

WinFsp through 2.2.26215 contains a null pointer dereference vulnerability in the kernel driver's Fast I/O device contro…

Description

WinFsp through 2.2.26215 contains a null pointer dereference vulnerability in the kernel driver's Fast I/O device control handler that fails to validate the volume context before use. An unprivileged local user can trigger a denial of service by opening the WinFsp control device and issuing FSP_IOCTL_TRANSACT requests, causing a system crash.

Scores

Severity
medium
CVSS v2
4.6
CVSS v3
5.5
CVSS v4
6.8
EPSS
—

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