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

Source: https://junglewise.ai/threats/cve-2018-19949-qnap-nas-file-station-command-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-24. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2018-19949 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2022-05-24

A command injection vulnerability in QNAP NAS File Station allows remote attackers to execute arbitrary commands on the affected system. The vulnerability stems from improper neutralization of special elements used in a command.

Technologies: [QNAP Network Attached Storage (NAS)](https://junglewise.ai/threats/technologies/network-attached-storage-nas). Vendors: [QNAP](https://junglewise.ai/threats/vendors/qnap).

## Quick answers

**Is CVE-2018-19949 exploited in the wild?** Yes. CVE-2018-19949 is known to be exploited in the wild, first recorded on 24 May 2022. Treat it as urgent.

**How severe is CVE-2018-19949?** Critical severity, with a CVSS score of 9.8, published 24 May 2022.

**Which products and versions are affected?** QNAP QTS (File Station) < 4.4.2.1231 build 20200302; QNAP QTS (File Station) < 4.4.1.1201 build 20200130; QNAP QTS (File Station) < 4.3.6.1218 build 20200214; QNAP QTS (File Station) < 4.3.4.1190 build 20200107; and 2 more.

**Is there a fix for CVE-2018-19949?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2018-19949 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2018-19949?** Check whether you run QNAP Network Attached Storage (NAS). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- QNAP QTS (File Station) < 4.4.2.1231 build 20200302
- QNAP QTS (File Station) < 4.4.1.1201 build 20200130
- QNAP QTS (File Station) < 4.3.6.1218 build 20200214
- QNAP QTS (File Station) < 4.3.4.1190 build 20200107
- QNAP QTS (File Station) < 4.3.3.1161 build 20200109
- QNAP QTS (File Station) < 4.2.6 build 20200109

## Timeline

- 2020-10-28: disclosed: NVD Published Date
- 2022-05-24: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

## Related threats

- [QNAP NAS File Station Cross-Site Scripting Vulnerability](https://junglewise.ai/threats/cve-2018-19953-qnap-nas-file-station-cross-site-scripting-vulnerability)
- [QNAP NAS File Station Cross-Site Scripting Vulnerability](https://junglewise.ai/threats/cve-2018-19943-qnap-nas-file-station-cross-site-scripting-vulnerability)
- [QNAP Network-Attached Storage (NAS) Command Injection Vulnerability](https://junglewise.ai/threats/cve-2020-2509-qnap-network-attached-storage-nas-command-injection-vulnerability)
- [QNAP NAS Improper Authorization Vulnerability](https://junglewise.ai/threats/cve-2021-28799-qnap-nas-improper-authorization-vulnerability)