CVE DATABASE / CVE-2018-19943
CVE-2018-19943
QNAP NAS File Station Cross-Site Scripting Vulnerability
Confirmed exploited in the wild. Added 2022-05-24.
Federal remediation due 2022-06-14.
Required action: Apply updates per vendor instructions.
Summary
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
CVSS 3.1 breakdown
| Base score | 8 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | HIGH |
| Privileges required | LOW |
| User interaction | REQUIRED |
| Scope | CHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- https://www.qnap.com/zh-tw/security-advisory/qsa-20-01
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19943
Data: NIST NVD + CISA KEV. NVD last modified 2025-11-03. Always verify against the vendor advisory before acting.