CVE-2018-19949 QNAP NAS File Station Command Injection

Exploited in the wild Critical 9.8 Published 28 Oct 2020 Updated 2 Oct 2026

Remote attackers can execute arbitrary commands on QNAP NAS devices via a command injection vulnerability in the QTS operating system.

Exploited in the wild: Since 24 May 2022
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-19949?

CVE-2018-19949 is a critical command injection vulnerability in Qnap Qts, published on 28 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-78, CWE-77, CWE-20

Which versions are affected by CVE-2018-19949?

It affects 1 product.

Products include Qnap Qts.

How do I fix CVE-2018-19949?

No fix has been published for CVE-2018-19949 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 14 Jun 2022.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2018-19949 being exploited?

Yes. Attackers have exploited CVE-2018-19949 in the wild since at least 24 May 2022, including in ransomware campaigns.

All Qnap Qts vulnerabilities

Sources

Also known as GHSA-h9cw-v634-8jcw.