File Station 5
CVE-2026-26239

8.7HIGH

Key Information:

Vendor

QNAP
Status
File Station 5
Vendor
CVE Published:
10 June 2026

What is CVE-2026-26239?

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

Affected Version(s)

File Station 5 5.5.0 < 5.5.6.5208

References

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

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Moritz Abrell, SySS GmbH
.