CVE-2025-66273

HighCVSS 7.2/10Last modified Jul 23, 2026

Description

A command injection vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to execute arbitrary commands.

We have already fixed the vulnerability in the following versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3397 build 20260206 and later

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-78

Affected software

Vendor	Product	Versions
QNAP Systems Inc.	QTS	>= 5.2.0, < 5.2.9.3410 build 20260214
QNAP Systems Inc.	QuTS hero	>= h5.2.0, < h5.2.9.3410 build 20260214; >= h5.3.0, < h5.3.4.3500 build 20260520; >= ?, < h6.0.0.3397 build 20260206

References

https://www.qnap.com/en/security-advisory/qsa-26-10Broken Link, Vendor Advisory

Timeline

Published: Jun 10, 2026
Last modified: Jul 23, 2026
NVD status: Analyzed

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