CVE-2026-93689 [MEDIUM] – WinFsp through 2.2.26215 contains a null pointer dereference vulnerability in the kernel d

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.