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CVE-2025-47205

QTS, QuTS hero

Published: Feb 11, 2026Updated: Feb 27, 2026 Sources: CVE List NVDCWE-476
NVD MITRE
4.9CVSSMEDIUM
EPSS Score
0.4%
Top 67.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-476

Affected Products

QTSQNAP Systems Inc.Hardware Firmware
QuTS heroQNAP Systems Inc.Hardware Firmware
qtsqnapHardware Firmware
quts heroqnapHardware Firmware
qnap systems inc.commercialTWHardware Firmwareaka qnap
qnapcommercialTWHardware Firmwareaka qnap systems

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://www.qnap.com/en/security-advisory/qsa-26-05
qnap.com

Timeline

Published
Feb 11, 2026
Last Updated
Feb 27, 2026

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