# CVE-2018-19953: QNAP NAS File Station Cross-Site Scripting Vulnerability

> CVE-2018-19953: QNAP NAS File Station Cross-Site Scripting Vulnerability. CVSS 6.1 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2018-19953
Last updated: 2026-10-01T19:26:08Z

- Published: 2020-10-28 17:55 UTC · Updated: 2026-10-01 19:26 UTC · Assigner: qnap
- CVSS: 6.1 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS: 30.5%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-05-24, federal due date 2022-06-14, ransomware use: Known
- CWE: CWE-79, CWE-80

## Description

If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code. QNAP has already fixed the issue in the following QTS versions. QTS 4.4.2.1231 on build 20200302; QTS 4.4.1.1201 on build 20200130; QTS 4.3.6.1218 on build 20200214; QTS 4.3.4.1190 on build 20200107; QTS 4.3.3.1161 on build 20200109; QTS 4.2.6 on build 20200109.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- QNAP Systems Inc.: QTS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-19953)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2018-19953)
- [https://www.qnap.com/zh-tw/security-advisory/qsa-20-01](https://www.qnap.com/zh-tw/security-advisory/qsa-20-01)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2018-19953 · Markdown: https://rewindex.com/cve/CVE-2018-19953.md · JSON: https://rewindex.com/api/v1/cves/CVE-2018-19953 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:49:21.284Z