Description

A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack.

We have already fixed the vulnerability in the following version:
File Station 5 5.5.6.4847 and later

Classification

CVE ID: CVE-2025-22490

CVSS Base Severity: MEDIUM

CVSS Base Score: 5.3

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

Affected Products

Vendor: QNAP Systems Inc.

Product: File Station 5

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.08% (probability of being exploited)

EPSS Percentile: 24.85% (scored less or equal to compared to others)

EPSS Date: 2025-06-27 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-22490
https://www.qnap.com/en/security-advisory/qsa-25-16

Timeline