NULL Pointer Dereference in QNAP Operating System
CVE-2025-52857

5.1MEDIUM

Key Information:

Vendor

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

What is CVE-2025-52857?

A vulnerability has been identified in several versions of QNAP's operating system due to a NULL pointer dereference. This flaw could potentially allow a remote attacker, armed with administrative privileges, to exploit the vulnerability and execute a denial-of-service (DoS) attack, leading to system disruptions. Users are advised to upgrade to the fixed versions, QTS 5.2.6.3195 build 20250715 and later, or QuTS hero h5.2.6.3195 build 20250715 and later, to mitigate this risk.

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Deploy the Patch

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
.