NULL Pointer Dereference Vulnerability in QNAP Operating System
CVE-2025-59386

1.2LOW

Key Information:

Vendor

QNAP
Status
Quts Hero
Vendor
CVE Published:
11 February 2026

What is CVE-2025-59386?

A NULL pointer dereference vulnerability has been identified in multiple versions of the QNAP operating system. If exploited by a remote attacker with administrator access, this vulnerability can enable the attacker to execute a denial-of-service (DoS) attack, potentially leading to service interruptions. Users should ensure they are running the latest version, QuTS hero h5.3.2.3354 build 20251225 or later, to mitigate this risk.

Affected Version(s)

QuTS hero h5.3.x

References

https://www.qnap.com/en/security-advisory/qsa-26-08

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
.