CVE-2026-26239

HIGH

Qnap Systems Inc. File Station 5 < 5.5.6.5208 - Buffer Overflow

Title source: rule

Description

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

References (1)

Core 1

Core References

https://www.qnap.com/en/security-advisory/qsa-26-37

Scores

CVSS v3 8.1

EPSS 0.0029

EPSS Percentile 20.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-121

Status published

Products (2)

qnap/file_station 5.5.6.4691 - 5.5.6.5208

QNAP Systems Inc./File Station 5 5.5.0 - 5.5.6.5208

Published Jun 10, 2026

Tracked Since Jun 10, 2026