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MEDIUM · 4.9

CVE-2025-52866

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerabilit...

Vulnerability Description

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QTS 5.2.6.3195 build 20250715 and later QuTS hero h5.2.6.3195 build 20250715 and later

CVSS Score

4.9

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
QnapQts5.2.0.2737
QnapQuts Heroh5.2.0.2737

Related Weaknesses (CWE)

CWE-476

References

FAQ

What is CVE-2025-52866?

CVE-2025-52866 is a vulnerability with a CVSS score of 4.9 (MEDIUM). A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerabilit...

How severe is CVE-2025-52866?

CVE-2025-52866 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-52866?

Check the references section above for vendor advisories and patch information. Affected products include: Qnap Qts, Qnap Quts Hero.