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CVE-2018-19943 Details

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:8 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19943	CISA-ADP	US Government Resource
https://www.qnap.com/zh-tw/security-advisory/qsa-20-01	CVE	Vendor Advisory
https://www.qnap.com/zh-tw/security-advisory/qsa-20-01	[email protected]	Vendor Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name	Date Added	Due Date	Required Action
QNAP NAS File Station Cross-Site Scripting Vulnerability	May 24, 2022	Jun 14, 2022	Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]
CWE-80	Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)	[email protected]

Affected Products

Product	Versions
qnap qts	< 4.2.6 >= 4.3.1.0013, < 4.3.3.1252 >= 4.3.4, < 4.3.4.1282 >= 4.3.6, < 4.3.6.1263 >= 4.4.0, < 4.4.1.1261
CPE cpe:2.3:o:qnap:qts:::::::: cpe:2.3:o:qnap:qts:4.2.6:-:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20170517:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20190322:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20190730:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20190921:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20191107:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20200109:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20200421:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20200611:::::: cpe:2.3:o:qnap:qts:4.2.6:build_20200821:::::: Remediation No remediation found in references.

Product

Versions

qnap qts

< 4.2.6

>= 4.3.1.0013, < 4.3.3.1252

>= 4.3.4, < 4.3.4.1282

>= 4.3.6, < 4.3.6.1263

>= 4.4.0, < 4.4.1.1261

CPE

cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:-:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20170517:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20190322:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20190730:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20190921:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20191107:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20200109:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20200421:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20200611:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.2.6:build_20200821:*:*:*:*:*:*

Remediation

No remediation found in references.

Change History

12 change records found show changes

Date	Action	Recorded By
Aug 13, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 3, 2025	Modified Analysis	[email protected]
Oct 22, 2025	CVE Modified	CISA-ADP
Oct 21, 2025	CVE Modified	CISA-ADP
Oct 21, 2025	CVE Modified	CISA-ADP
Mar 7, 2025	Modified Analysis	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 13, 2020	Initial Analysis	[email protected]
Oct 28, 2020	CVE Modified	[email protected]