May 24, 2022 · Applied Cybernetics Group
CVE-2018-19943 — 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
- 97.0th percentile (score 0.177, as of
2026-09-16) - NVD CVSS v3.1
- 8 (HIGH)
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2018-19943
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 these issues in the following QTS versions. QTS 4.4.2.1270 build 20200410 and later QTS 4.4.1.1261 build 20200330 and later QTS 4.3.6.1263 build 20200330 and later QTS 4.3.4.1282 build 20200408 and later QTS 4.3.3.1252 build 20200409 and later QTS 4.2.6 build 20200421 and later