Null Pointer Dereference Vulnerability in QNAP Operating Systems
CVE-2025-53596

1.2LOW

Key Information:

Vendor

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

What is CVE-2025-53596?

A null pointer dereference vulnerability has been identified in several versions of QNAP operating systems. This flaw can allow malicious actors who gain administrator access to exploit the vulnerability effectively, resulting in potential denial-of-service (DoS) attacks. Users are advised to update to QTS version 5.2.7.3256 build 20250913 or later and QuTS hero version h5.2.7.3256 build 20250913 or later to mitigate the risks.

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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:
1.2
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

coral
JSON
.