CVE-2018-19953

MEDIUM KEV RANSOMWARE

QNAP QTS < 4.2.6 - Cross-Site Scripting

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2018-19953 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 the issue in the following QTS versions. QTS 4.4.2.1231 on build 20200302; QTS 4.4.1.1201 on build 20200130; QTS 4.3.6.1218 on build 20200214; QTS 4.3.4.1190 on build 20200107; QTS 4.3.3.1161 on build 20200109; QTS 4.2.6 on build 20200109.

References (2)

Core 2

Scores

CVSS v3 6.1
EPSS 0.3152
EPSS Percentile 96.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact partial

Details

CISA KEV 2022-05-24
VulnCheck KEV 2022-01-26
InTheWild.io 2020-06-08
ENISA EUVD EUVD-2018-11624
Ransomware Use Confirmed
CWE
CWE-80 CWE-79
Status published
Products (2)
qnap/qts 4.2.6 (6 CPE variants)
qnap/qts < 4.2.6
Published Oct 28, 2020
KEV Added May 24, 2022
Tracked Since Feb 18, 2026