CVE-2025-66279
Received Received - Intake
Command Injection in QNAP QTS and QuTS hero

Publication date: 2026-06-10

Last updated on: 2026-06-10

Assigner: QNAP Systems, Inc.

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
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Meta Information
Published
2026-06-10
Last Modified
2026-06-10
Generated
2026-06-10
AI Q&A
2026-06-10
EPSS Evaluated
N/A
NVD
CVE-2025-66279
EUVD
EUVD-2025-210100
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
qnap qts From 5.2.9.3410 (inc)
qnap quts_hero From h5.2.9.3410 (inc)
qnap quts_hero From h5.3.4.3500 (inc)
qnap quts_hero From h6.0.0.3397 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
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Executive Summary

This vulnerability is a command injection issue affecting several versions of the QNAP operating system. It allows a remote attacker who has gained an administrator account to execute arbitrary commands on the affected system.

Impact Analysis

If exploited, this vulnerability can allow an attacker with administrator access to run any commands they choose on the system. This could lead to unauthorized control over the device, data compromise, disruption of services, or further attacks within the network.

Mitigation Strategies

To mitigate this vulnerability, you should update your QNAP operating system to the fixed versions provided by the vendor.

  • Upgrade QTS to version 5.2.9.3410 build 20260214 or later.
  • Upgrade QuTS hero to version h5.2.9.3410 build 20260214 or later.
  • Upgrade QuTS hero to version h5.3.4.3500 build 20260520 or later.
  • Upgrade QuTS hero to version h6.0.0.3397 build 20260206 or later.

These updates fix the command injection vulnerability that could be exploited by a remote attacker with an administrator account.

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