CVE-2018-19949: QNAP NAS File Station Command Injection Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-05-24. EPSS: 28.6% chance of exploitation in the next 30 days.

If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. 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.

Affected products

• QNAP QTS: before 4.2.6 (fixed in 4.2.6); from 4.3.1.0013, before 4.3.3.1161 (fixed in 4.3.3.1161); from 4.3.4, before 4.3.4.1190 (fixed in 4.3.4.1190); from 4.3.6, before 4.3.6.1218 (fixed in 4.3.6.1218); from 4.4.0, before 4.4.1.1201 (fixed in 4.4.1.1201); from 4.4.2, before 4.4.2.1231 (fixed in 4.4.2.1231); …

Published 2020-10-28. Last modified 2026-10-02.