CVE-2018-19953

CVE-2018-19953

Vendor Qnap Systems Inc.
Product QTS
Weakness CWE-79 · XSS
KEV Status Known Exploited
Ransomware Used in campaigns
Published October 28, 2020
Last update October 21, 2025

CVSS base score

What the vulnerability does

01Description

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 mandated remediation

02CISA Required Action

Apply updates per vendor instructions.

Key dates

03Disclosure timeline

October 28, 2020 CVE published
October 21, 2025 Record updated

Related vulnerabilities

05Related CVE