CVE-2025-66281

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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

7.2 /10

CVSS v3 : HIGH

V3 Legend

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

23 Jul 2026, 09:10

Type Values Removed Values Added
Summary
  • (es) 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 denegación de servicio (DoS). Ya hemos corregido la vulnerabilidad en las siguientes versiones: QTS 5.2.9.3410 build 20260214 y posteriores QuTS hero h5.2.9.3410 build 20260214 y posteriores QuTS hero h5.3.4.3500 build 20260520 y posteriores QuTS hero h6.0.0.3397 build 20260206 y posteriores

17 Jun 2026, 09:56

Type Values Removed Values Added
References () https://www.qnap.com/en/security-advisory/qsa-26-10 - Vendor Advisory, Broken Link () https://www.qnap.com/en/security-advisory/qsa-26-10 - Broken Link, Vendor Advisory

15 Jun 2026, 18:32

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.2
First Time Qnap quts Hero
Qnap qts
Qnap
CPE cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
References () https://www.qnap.com/en/security-advisory/qsa-26-10 - () https://www.qnap.com/en/security-advisory/qsa-26-10 - Vendor Advisory, Broken Link

10 Jun 2026, 04:17

Type Values Removed Values Added
New CVE
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

  • qts
  • quts_hero
CWE
CWE-476

NULL Pointer Dereference