Path Traversal in QNAP File Station
CVE-2025-62855
A path traversal vulnerability has been reported to affect File Station 5. If a local attacker gains an administrator account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5190 and later
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
- QNAP File Station
- QNAP Systems Inc. File Station 5 — versions 5.5.x
Weakness classification (CWE)
References
- www.qnap.com/en/security-advisory/qsa-26-03 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-62855?
- CVE-2025-62855 is a medium-severity vulnerability in QNAP File Station, classified under Path Traversal. CVSS score: 4.4/10. Published 2026-02-11.
- How severe is CVE-2025-62855?
- Medium severity. CVSS v3 base score is 4.4 out of 10.