CVE-2026-26239 HIGH

CVE-2026-26239: File Station 5

Vendor Qnap Systems Inc.
Product File Station 5
Weakness CWE-121
Published June 10, 2026
Last update June 10, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

A buffer overflow vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5208 and later

Key dates

02Disclosure timeline

June 10, 2026 CVE published
June 10, 2026 Record updated