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
Published: 2026-02-11
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Solution

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

Tracking

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Advisories

No advisories yet.

History

Tue, 09 Jun 2026 07:45:00 +0000

Type Values Removed Values Added
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 version: QuTS hero h5.3.2.3354 build 20251225 and later 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
Title QuTS hero QTS, QuTS hero
Metrics cvssV4_0

{'score': 1.2, '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:U'}

 cvssV4_0

{'score': 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'}

Thu, 12 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Qnap
Qnap quts Hero
CPEs 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:*:*:*:*:*:*
Vendors & Products Qnap
Qnap quts Hero
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

Wed, 11 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Qnap Systems
Qnap Systems quts Hero
Vendors & Products Qnap Systems
Qnap Systems quts Hero

Wed, 11 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 11 Feb 2026 12:45:00 +0000

Type Values Removed Values Added
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 version: QuTS hero h5.3.2.3354 build 20251225 and later
Title QuTS hero
Weaknesses CWE-476
References
Metrics cvssV4_0

{'score': 1.2, '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:U'}

Subscriptions

Qnap Quts Hero
Qnap Systems Quts Hero
cve-icon MITRE

Status: PUBLISHED

Assigner: qnap

Published:

Updated: 2026-06-09T06:17:38.342Z

Reserved: 2025-11-26T09:25:37.832Z

Link: CVE-2025-66274

cve-icon Vulnrichment

Updated: 2026-02-11T16:49:30.495Z

cve-icon NVD

Status : Modified

Published: 2026-02-11T13:15:58.243

Modified: 2026-06-09T08:16:26.640

Link: CVE-2025-66274

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-11T21:45:33Z

Weaknesses