CVE-2025-66274

Published: Feb 11, 2026Modified: Jun 17, 2026

5.1

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: security@qnapsecurity.com.tw (Secondary)

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: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.2.3354 build 20251225 and later QuTS hero h6.0.0.3397 build 20260206 and later

Affected (5)

Products: Qnap: Quts Hero

Qnap

1 product

Quts Hero

Configuration A

5 vulnerable

Vulnerable Software	Affected Versions
Qnap Quts Hero	Version h5.3.0.3115 build_20250430
Qnap Quts Hero	Version h5.3.0.3145 build_20250530
Qnap Quts Hero	Version h5.3.0.3192 build_20250716
Qnap Quts Hero	Version h5.3.1.3250 build_20250912
Qnap Quts Hero	Version h5.3.1.3292 build_20251024

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (1)

https://www.qnap.com/en/security-advisory/qsa-26-08

Source: security@qnapsecurity.com.tw

Vendor Advisory

Timeline

No history available yet.