CVE-2026-26240: A buffer overflow vulnerability has been reported to affect File Station 5. The remote attackers can then exploit the vulnerability to modify memory or crash…

PriorityP352critical9.1CVSS 3.1

AVNACLPRNUINSUCNIHAH

EPSS

0.32%

23.9th percentile

A buffer overflow vulnerability has been reported to affect File Station 5. The remote attackers can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5243 and later

Affected

2 ranges

Vendor	Product	Version range	Fixed in
qnap	file_station	>= 5.5.6.4691 < 5.5.6.5243	5.5.6.5243
qnap_systems_inc	file_station_5	>= 5.5.0 < 5.5.6.5243	5.5.6.5243

CVSS provenance

nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

nvdv4.05.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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