PT-2026-48372 · Qnap Systems · File Station 5

Published 2026-06-10 · Updated 2026-06-10 · CVE-2026-26239

Mitre

CVSS v4.0

8.7

High

Base vector

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

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

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-26239

Affected Products

File Station 5

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-26239 · Security Note
• https://qnap.com/en/security-advisory/qsa-26-37 · Note