CVE-2026-41539 — QTS, QuTS hero

Description (CNA)

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

Affected (CNA)

Vendor / product	Versions
QNAP Systems Inc. / QTS	affected 5.2.0 before 5.2.9.3492 build 20260507
QNAP Systems Inc. / QuTS hero	affected h5.2.0 before h5.2.9.3499 build 20260514; affected h5.3.0 before h5.3.4.3500 build 20260520; affected ? before h6.0.0.3500 build 20260520

CWE

CWE-79

References

https://www.qnap.com/en/security-advisory/qsa-26-10

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.