QTS, QuTS hero
Summary
| CVE | CVE-2025-66274 |
|---|---|
| State | PUBLISHED |
| Assigner | qnap |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-02-11 13:15:58 UTC |
| Updated | 2026-06-09 08:16:26 UTC |
| 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 |
Risk And Classification
Primary CVSS: v4.0 5.1 MEDIUM from [email protected]
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
EPSS: 0.001880000 probability, percentile 0.407000000 (date 2026-06-13)
Problem Types: CWE-476 | CWE-476 CWE-476
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 5.1 | MEDIUM | 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/C... |
| 4.0 | CNA | CVSS | 5.1 | MEDIUM | 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 |
| 3.1 | [email protected] | Primary | 4.9 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
CVSS v4.0 Breakdown
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 v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Qnap | Quts Hero | h5.3.0.3115 | build_20250430 | All | All |
| Operating System | Qnap | Quts Hero | h5.3.0.3145 | build_20250530 | All | All |
| Operating System | Qnap | Quts Hero | h5.3.0.3192 | build_20250716 | All | All |
| Operating System | Qnap | Quts Hero | h5.3.1.3250 | build_20250912 | All | All |
| Operating System | Qnap | Quts Hero | h5.3.1.3292 | build_20251024 | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | QNAP Systems Inc. | QTS | affected 5.2.0 5.2.9.3410 build 20260214 custom | Not specified |
| CNA | QNAP Systems Inc. | QuTS Hero | affected h5.2.0 h5.2.9.3410 build 20260214 custom | Not specified |
| CNA | QNAP Systems Inc. | QuTS Hero | affected h5.3.0 h5.3.2.3354 build 20251225 custom | Not specified |
| CNA | QNAP Systems Inc. | QuTS Hero | affected ? h6.0.0.3397 build 20260206 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.qnap.com/en/security-advisory/qsa-26-08 | [email protected] | www.qnap.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: coral (en)
Additional Advisory Data
Solutions
CNA: 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