QTS, QuTS hero
CVE-2026-41539

8.7HIGH

Key Information:

Vendor

QNAP
Status
Qts
Quts Hero
Vendor
CVE Published:
9 June 2026

What is CVE-2026-41539?

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 Version(s)

QTS 5.2.0 < 5.2.9.3492 build 20260507

QuTS hero h5.2.0

QuTS hero h5.3.0

References

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

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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