NULL Pointer Dereference Vulnerability in QNAP Operating System
CVE-2025-47205

5.1MEDIUM

Key Information:

Vendor

QNAP
Status
Qts
Quts Hero
Vendor
CVE Published:
11 February 2026

What is CVE-2025-47205?

A NULL pointer dereference vulnerability exists in multiple versions of the QNAP operating system, which can be exploited by remote attackers with administrator access. This vulnerability allows malicious actors to instigate a denial-of-service (DoS) attack, potentially impacting system availability. Affected users should update to the latest versions QTS 5.2.8.3332 build 20251128 or higher and QuTS hero h5.2.8.3321 build 20251117 or later to mitigate risks associated with this vulnerability.

Affected Version(s)

QTS 5.2.x < 5.2.8.3332 build 20251128

QuTS hero h5.2.x

References

https://www.qnap.com/en/security-advisory/qsa-26-05

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
.