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CVE-2026-41539

HIGH
8.7
CVSS 4.0
Description
A cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to bypass security mechanisms or read application data. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3492 build 20260507 and later QuTS hero h5.2.9.3499 build 20260514 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3500 build 20260520 and later

Metadata

CVE ID
CVE-2026-41539
State
PUBLISHED
Assigner
qnap
Reserved
2026-04-21 03:07 UTC
Published
2026-06-09 05:51 UTC
Last updated
2026-06-09 13:12 UTC
Primary CWE
CWE-79
CWE-79
Vendor / Product
QNAP Systems Inc. / QTS
Sources
cve.org  ·  NVD

Severity & Metrics

8.7 HIGH CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (2)
VendorProductPlatformVersions
QNAP Systems Inc. QTS — 5.2.0 < 5.2.9.3492 build 20260507
QNAP Systems Inc. QuTS hero — h5.2.0 < h5.2.9.3499 build 20260514, h5.3.0 < h5.3.4.3500 build 20260520, ? < h6.0.0.3500 build 20260520
Weakness (CWE)
CWESourceDescription
CWE-79 cna CWE-79
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.7 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References (1)
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