NULL Pointer Dereference Vulnerability in QNAP Operating Systems
CVE-2025-52426

1.2LOW

Key Information:

Vendor

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

What is CVE-2025-52426?

A NULL pointer dereference vulnerability has been identified in several versions of QNAP operating systems. If exploited by a remote attacker with administrative access, this vulnerability could enable the attacker to execute a denial-of-service (DoS) attack, disrupting normal system functionality. It is critical for users to update their systems to the patched versions provided to mitigate this risk.

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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
.