CVE-2018-19943

HIGH KEV RANSOMWARE

QNAP QTS < 4.2.6 - Cross-Site Scripting

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2018-19943 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added May 24, 2022, with confirmed use in ransomware campaigns.

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

References (2)

Core 2

Scores

CVSS v3 8.0
EPSS 0.0703
EPSS Percentile 91.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2022-05-24
VulnCheck KEV 2022-01-26
InTheWild.io 2020-06-08
ENISA EUVD EUVD-2018-11614
Ransomware Use Confirmed
CWE
CWE-80 CWE-79
Status published
Products (2)
qnap/qts 4.2.6 (10 CPE variants)
qnap/qts < 4.2.6
Published Oct 28, 2020
KEV Added May 24, 2022
Tracked Since Feb 18, 2026