CVE-2025-62850

Analyzed Analyzed - Analysis Complete

NULL Pointer Dereference in QuTS hero DoS Vulnerability

Publication date: 2026-06-10

Last updated on: 2026-06-15

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

CVSS Scores

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Meta Information

Published

2026-06-10

Last Modified

2026-06-15

Generated

2026-06-30

AI Q&A

2026-06-10

EPSS Evaluated

2026-06-29

NVD

CVE-2025-62850

EUVD

EUVD-2025-210097

Affected Vendors & Products

Vendor	Product	Version / Range
qnap	quts_hero	From h5.3.0.3115 (inc) to h5.3.4.3500 (exc)
qnap	quts_hero	From h6.0.0.3324 (inc) to h6.0.0.3459 (exc)
qnap	quts_hero	From h5.2.0.2737 (inc) to h5.2.9.3410 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-476	The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

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.

Compliance Impact

The provided information does not specify how this vulnerability impacts compliance with common standards and regulations such as GDPR or HIPAA.

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