CVE-2025-66274

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 version: QuTS hero h5.3.2.3354 build 20251225 and later

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.qnap.com/en/security-advisory/qsa-26-08	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:qnap:quts_hero:h5.3.0.3115:build_20250430::::::
	cpe:2.3:o:qnap:quts_hero:h5.3.0.3145:build_20250530::::::
	cpe:2.3:o:qnap:quts_hero:h5.3.0.3192:build_20250716::::::
	cpe:2.3:o:qnap:quts_hero:h5.3.1.3250:build_20250912::::::
	cpe:2.3:o:qnap:quts_hero:h5.3.1.3292:build_20251024::::::

History

12 Feb 2026, 17:08

Type	Values Removed	Values Added
First Time		Qnap quts Hero Qnap
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 4.9
CPE		cpe:2.3:o:qnap:quts_hero:h5.3.0.3145:build_20250530:::::: cpe:2.3:o:qnap:quts_hero:h5.3.1.3250:build_20250912:::::: cpe:2.3:o:qnap:quts_hero:h5.3.0.3115:build_20250430:::::: cpe:2.3:o:qnap:quts_hero:h5.3.1.3292:build_20251024:::::: cpe:2.3:o:qnap:quts_hero:h5.3.0.3192:build_20250716::::::
References	~~() https://www.qnap.com/en/security-advisory/qsa-26-08 -~~	() https://www.qnap.com/en/security-advisory/qsa-26-08 - Vendor Advisory

11 Feb 2026, 13:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-11 13:15

Updated : 2026-02-12 17:08

NVD link : CVE-2025-66274

Mitre link : CVE-2025-66274

CVE.ORG link : CVE-2025-66274

JSON object : View

Products Affected

qnap

quts_hero

CWE

CWE-476

NULL Pointer Dereference

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