CVE-2018-19949
QNAP NAS File Station Command Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 14 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 30.16% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 24 May 2022 · due 14 June 2022 · used in ransomware campaigns
- Weakness
- CWE-20, CWE-77, CWE-78
- Affected
- qnap/qts
- Source
- security@qnapsecurity.com.tw
EPSS moved from 28.4% on 24 September 2026 to 30.2% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2018-19949
References
- https://www.qnap.com/zh-tw/security-advisory/qsa-20-01Vendor Advisory
- https://www.qnap.com/zh-tw/security-advisory/qsa-20-01Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19949US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.