# CVE-2018-19943

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

- Page: https://www.vulneraibility.com/cve/CVE-2018-19943
- CVSS: 8.0
- Known exploited: yes, in CISA KEV since 2022-05-24; CISA due date 2022-06-14; known ransomware use
- EPSS: 22.68% (percentile 97.7)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2022-06-01)
- Weakness: CWE-79, CWE-80
- Published: 2020-10-28

## Affected versions

- QNAP Systems Inc. QTS: affected < 4.4.2.1270; < 4.4.1.1261; < 4.3.6.1263; < 4.3.4.1282; < 4.3.3.1252; < 4.2.6

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://www.qnap.com/zh-tw/security-advisory/qsa-20-01
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19943

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.