Null Pointer Dereference Vulnerability in QNAP Operating System
CVE-2025-52853

5.1MEDIUM

Key Information:

Vendor

QNAP
Status
Qts
Quts Hero
Vendor
CVE Published:
3 October 2025

What is CVE-2025-52853?

A null pointer dereference vulnerability affects several versions of the QNAP operating system, which can allow a remote attacker with administrator credentials to execute a denial-of-service (DoS) attack. Successful exploitation disrupts service availability, necessitating urgent resolution. The issue has been addressed in QTS 5.2.6.3195 build 20250715 and later, as well as in QuTS hero h5.2.6.3195 build 20250715 and later.

Affected Version(s)

QTS 5.2.x < 5.2.6.3195 build 20250715

QuTS hero h5.2.x

References

https://www.qnap.com/en/security-advisory/qsa-25-36

CVSS V4

Score:
5.1
Severity:
MEDIUM
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
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CVE-2025-52853 : Null Pointer Dereference Vulnerability in QNAP Operating System