CVEs / CVE-2018-19943
CVE-2018-19943: QNAP NAS File Station Cross-Site Scripting Vulnerability
- Known exploited in the CISA KEV catalog since 24 May 2022
- medium 5.4 CVSS 3.1 (NVD)
- EPSS 22.6% chance of exploitation in the next 30 days, higher than 97% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
A cross-site scripting vulnerability affecting QNAP NAS File Station could allow remote attackers to inject malicious code.
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
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| QNAP Systems Inc. QTS | from unspecified, before 4.4.2.1270 | 4.4.2.1270 |
| QNAP Systems Inc. QTS | from unspecified, before 4.4.1.1261 | 4.4.1.1261 |
| QNAP Systems Inc. QTS | from unspecified, before 4.3.6.1263 | 4.3.6.1263 |
| QNAP Systems Inc. QTS | from unspecified, before 4.3.4.1282 | 4.3.4.1282 |
| QNAP Systems Inc. QTS | from unspecified, before 4.3.3.1252 | 4.3.3.1252 |
| QNAP Systems Inc. QTS | from unspecified, before 4.2.6 | 4.2.6 |
Exploitation
| In CISA KEV since | 24 May 2022 |
|---|---|
| Due date for US federal agencies | 14 Jun 2022 |
| Used in ransomware campaigns | Known |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 5.4 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NScored by NVD |
|---|---|
| Weakness | CWE-79, CWE-80 |
References
- CVE-2018-19943 on NVD
- CVE-2018-19943 in the CISA KEV catalog
- https://www.qnap.com/zh-tw/security-advisory/qsa-20-01 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19943 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.