CVE-2025-62850
Received Received - Intake
NULL Pointer Dereference in QuTS hero DoS Vulnerability

Publication date: 2026-06-10

Last updated on: 2026-06-10

Assigner: QNAP Systems, Inc.

Description
A NULL pointer dereference 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 launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3459 build 20260409 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-2025-62850
EUVD
EUVD-2025-210097
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
qnap quts_hero From 5.2.9.3410 (inc)
qnap quts_hero From 5.3.4.3500 (inc)
qnap quts_hero From 6.0.0.3459 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
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Executive Summary

This vulnerability is a NULL pointer dereference issue affecting several versions of the QNAP operating system called QuTS hero. It occurs when a remote attacker who already has an administrator account exploits the flaw to cause a denial-of-service (DoS) attack, which can disrupt the normal operation of the system.

Impact Analysis

If exploited, this vulnerability allows an attacker with administrator privileges to launch a denial-of-service (DoS) attack on the affected QNAP system. This can lead to system crashes or unavailability, disrupting access to services and data hosted on the device.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade your QNAP operating system to one of the fixed versions.

  • QuTS hero h5.2.9.3410 build 20260214 or later
  • QuTS hero h5.3.4.3500 build 20260520 or later
  • QuTS hero h6.0.0.3459 build 20260409 or later

Since the vulnerability requires an attacker to have an administrator account, ensure that administrator credentials are secured and monitor for any unauthorized access.

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