Out-of-Bounds Read Vulnerability in QNAP Operating Systems
CVE-2025-54166

4.6MEDIUM

Key Information:

Vendor

QNAP
Status
Qts
Quts Hero
Vendor
CVE Published:
2 January 2026

What is CVE-2025-54166?

An out-of-bounds read vulnerability has been identified in several QNAP operating system versions, allowing remote attackers with administrator-level access to exploit the issue and retrieve confidential data. Ensuring that systems are updated to the latest versions is critical for safeguarding against unauthorized data access.

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Deploy the Patch

Affected Version(s)

QTS 5.2.x < 5.2.7.3256 build 20250913

QuTS hero h5.2.x

QuTS hero h5.3.x

References

https://www.qnap.com/en/security-advisory/qsa-25-50

CVSS V4

Score:
4.6
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

coral
JSON
.