QTS, QuTS hero_CVE-2026-41539

8.7 / 10

HIGH

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

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

AI Analysis

Cross-site scripting (XSS) vulnerability in QNAP operating system

Basic Information

ID CVE-2026-41539

Source qnap

Published Jun 9, 2026 at 05:51

Affected Product

Vendor QNAP Systems Inc.

Product QTS

Version 5.2.0

Affected Versions QNAP Systems Inc. QTS 5.2.0
QNAP Systems Inc. QuTS hero h5.2.0
QNAP Systems Inc. QuTS hero h5.3.0
QNAP Systems Inc. QuTS hero ?

CWE Classification

CWE-79

AI Assessment

AI Score 8.7 / 10

AI Severity High

Vendor QNAP Systems Inc.

Product QTS, QuTS hero

Version 5.2.0 and prior to 5.2.9.3492, QuTS hero h5.2.0 and prior to h5.2.9.3499, QuTS hero h5.3.0 and prior to h5.3.4.3500, QuTS hero h6.0.0 and prior to h6.0.0.3500

References

www.qnap.com /en/security-advisory/qsa-26-31

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