What is CVE-2015-5664?

CVE-2015-5664 is a medium-severity vulnerability in QNAP Qts, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-07-03.

How severe is CVE-2015-5664?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in QNAP Qts

CVE-2015-5664

Cross-site scripting (XSS) vulnerability in File Station in QNAP QTS before 4.2.0 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2016-07-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

QNAP Qts

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.qnap.com/i/en/support/con_show.php (Patch, Vendor Advisory)
jvn.jp/en/jp/JVN42930233/index.html (Vendor Advisory, third-party-advisory)
jvndb.jvn.jp/jvndb/JVNDB-2016-000119 (Vendor Advisory, third-party-advisory)
www.securitytracker.com/id/1036123 (vdb-entry)

Frequently asked questions

What is CVE-2015-5664?: CVE-2015-5664 is a medium-severity vulnerability in QNAP Qts, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-07-03.
How severe is CVE-2015-5664?: Medium severity. CVSS v3 base score is 6.1 out of 10.