CVE-2025-66281

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS) attack. 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

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:qnap:qts::::::::
	cpe:2.3:o:qnap:quts_hero::::::::
	cpe:2.3:o:qnap:quts_hero::::::::
	cpe:2.3:o:qnap:quts_hero::::::::

History

No history.

Information

Published : 2026-06-10 04:17

Updated : 2026-07-23 09:10

NVD link : CVE-2025-66281

Mitre link : CVE-2025-66281

CVE.ORG link : CVE-2025-66281

JSON object : View

Products Affected

qnap

quts_hero
qts

CWE

CWE-476

NULL Pointer Dereference

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The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS) attack.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.9.3410 build 20260214 and later\nQuTS hero h5.2.9.3410 build 20260214 and later\nQuTS hero h5.3.4.3500 build 20260520 and later\nQuTS hero h6.0.0.3397 build 20260206 and later"}, {"lang": "es", "value": "Una vulnerabilidad de desreferencia de puntero NULL ha sido reportada que afecta a varias versiones del sistema operativo QNAP. Los atacantes remotos pueden entonces explotar la vulnerabilidad para lanzar un ataque de denegaci\u00f3n de servicio (DoS).\n\nYa hemos corregido la vulnerabilidad en las siguientes versiones:\nQTS 5.2.9.3410 build 20260214 y posteriores\nQuTS hero h5.2.9.3410 build 20260214 y posteriores\nQuTS hero h5.3.4.3500 build 20260520 y posteriores\nQuTS hero h6.0.0.3397 build 20260206 y posteriores"}], "lastModified": "2026-07-23T09:10:00.113", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1A317C8F-BB90-4EB6-96D4-C3FC65BC0D2C", "versionEndExcluding": "5.2.9.3410", "versionStartIncluding": "5.2.0.2737"}, {"criteria": "cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6446921C-0F3B-45DC-85B3-9EA8066E726E", "versionEndExcluding": "h5.2.9.3410", "versionStartIncluding": "h5.2.0.2737"}, {"criteria": "cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24358BA7-15BD-439B-A17A-A62C027C68CB", "versionEndExcluding": "h5.3.4.3500", "versionStartIncluding": "h5.3.0.3115"}, {"criteria": "cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "66E59962-660C-4947-98B2-2D5CE78FDF5F", "versionEndExcluding": "h6.0.0.3397", "versionStartIncluding": "h6.0.0.3324"}], "operator": "OR"}]}], "sourceIdentifier": "security@qnapsecurity.com.tw"}