QNAP QTS prior 4.4.2.1270 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in QNAP QTS. Affected by this issue is some unknown functionality. The manipulation leads to cross site scripting. This vulnerability is listed as CVE-2018-19943. The attack may be initiated remotely. In addition, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in QNAP QTS (Network Attached Storage Software). It has been rated as problematic. This issue affects some unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity.

The weakness was presented 10/29/2020. The advisory is shared at qnap.com. The identification of this vulnerability is CVE-2018-19943. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 05/24/2022 with a due date of 06/14/2022:

Apply updates per vendor instructions.

Upgrading to version 4.2.6, 4.3.3.1252, 4.3.4.1282, 4.3.6.1263, 4.4.1.1261 or 4.4.2.1270 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CNA Base Score: 8.0
CNA Vector (QNAP Systems, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: QTS 4.2.6/4.3.3.1252/4.3.4.1282/4.3.6.1263/4.4.1.1261/4.4.2.1270

Timelineinfo

12/07/2018 🔍
10/29/2020 +692 days 🔍
10/29/2020 +0 days 🔍
10/21/2025 +1818 days 🔍

Sourcesinfo

Vendor: qnap.com

Advisory: qnap.com
Status: Confirmed

CVE: CVE-2018-19943 (🔍)
GCVE (CVE): GCVE-0-2018-19943
GCVE (VulDB): GCVE-100-164033
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/29/2020 07:34
Updated: 10/21/2025 22:01
Changes: 10/29/2020 07:34 (37), 11/30/2020 01:43 (2), 11/30/2020 01:46 (19), 04/26/2024 13:12 (27), 09/09/2024 22:30 (1), 05/04/2025 20:45 (3), 10/21/2025 22:01 (12)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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