CVE-2026-93689 in WinFsp

Resumen

por MITRE • 2026-09-18

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.

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• Responsable: VulnCheck
• Reservar: 2026-09-18
• Divulgación: 2026-09-18
• Moderación: aceptado
• Artículo: VDB-407546
• CPE: listo
• CWE: CWE-476 (confirmado)
• CVSS: 5.5 (CNA)
• EPSS: 0.00000
• KEV: no
• Actividades: muy bajo

Fuentes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-93689
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-93689
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-93689/