NULL Pointer Dereference Vulnerability in QNAP Operating Systems
CVE-2025-53589

1.2LOW

Key Information:

Vendor

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

What is CVE-2025-53589?

A NULL pointer dereference vulnerability has been identified in various versions of QNAP operating systems. This flaw allows a remote attacker with administrative access to exploit the system, potentially leading to a denial-of-service (DoS) condition. Users of QNAP devices are recommended to update their systems to the latest versions to mitigate this risk. Patch versions that address the vulnerability include QTS 5.2.7.3256 build 20250913 and later, as well as updates for QuTS hero.

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
.