May 24, 2022 · Applied Cybernetics Group
CVE-2018-19953 — QNAP Network Attached Storage (NAS)
known ransomware use
QNAP NAS File Station Cross-Site Scripting Vulnerability
- Added to KEV
2022-05-24- Federal due date
2022-06-14- Vendor
- QNAP
- Product
- Network Attached Storage (NAS)
- EPSS
- 97.7th percentile (score 0.239, as of
2026-09-16) - NVD CVSS v3.1
- 6.1 (MEDIUM)
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2018-19953
CISA short description
A cross-site scripting vulnerability affecting QNAP NAS File Station could allow remote attackers to inject malicious code.
Required action
Apply updates per vendor instructions.
NVD description
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.