CVE-2025-52426

Published: Jan 2, 2026Modified: Jan 5, 2026

1.2

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/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:N/VA:L/SC:N/SI:N/SA:N/E:U/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 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1.3250 build 20250912 and later

Affected (34)

Products: Qnap: Quts Hero, Qts

Qnap

2 products

Quts Hero

Qts

Configuration A

18 vulnerable

Vulnerable Software	Affected Versions
Qnap Quts Hero	Version h5.2.0.2737 build_20240417
Qnap Quts Hero	Version h5.2.0.2782 build_20240601
Qnap Quts Hero	Version h5.2.0.2789 build_20240607
Qnap Quts Hero	Version h5.2.0.2802 build_20240620
Qnap Quts Hero	Version h5.2.0.2823 build_20240711
Qnap Quts Hero	Version h5.2.0.2851 build_20240808
Qnap Quts Hero	Version h5.2.0.2860 build_20240817
Qnap Quts Hero	Version h5.2.1.2929 build_20241025
Qnap Quts Hero	Version h5.2.1.2940 build_20241105
Qnap Quts Hero	Version h5.2.2.2952 build_20241116
Qnap Quts Hero	Version h5.2.3.3006 build_20250108
Qnap Quts Hero	Version h5.2.4.3070 build_20250312
Qnap Quts Hero	Version h5.2.4.3079 build_20250321
Qnap Quts Hero	Version h5.2.5.3138 build_20250519
Qnap Quts Hero	Version h5.2.6.3195 build_20250715
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

Configuration B

16 vulnerable

Vulnerable Software	Affected Versions
Qnap Qts	Version 5.2.0.2737 build_20240417
Qnap Qts	Version 5.2.0.2744 build_20240424
Qnap Qts	Version 5.2.0.2782 build_20240601
Qnap Qts	Version 5.2.0.2802 build_20240620
Qnap Qts	Version 5.2.0.2823 build_20240711
Qnap Qts	Version 5.2.0.2851 build_20240808
Qnap Qts	Version 5.2.0.2860 build_20240817
Qnap Qts	Version 5.2.1.2930 build_20241025
Qnap Qts	Version 5.2.2.2950 build_20241114
Qnap Qts	Version 5.2.3.3006 build_20250108
Qnap Qts	Version 5.2.4.3070 build_20250312
Qnap Qts	Version 5.2.4.3079 build_20250321
Qnap Qts	Version 5.2.4.3092 build_20250403
Qnap Qts	Version 5.2.5.3145 build_20250526
Qnap Qts	Version 5.2.6.3195 build_20250715
Qnap Qts	Version 5.2.6.3229 build_20250818

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-25-50

Source: security@qnapsecurity.com.tw

Vendor Advisory

Timeline

No history available yet.