Vulnerability Description
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3397 build 20260206 and later
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qnap | Qts | >= 5.2.0.2737, < 5.2.9.3410 |
| Qnap | Quts Hero | >= h5.2.0.2737, < h5.2.9.3410 |
Related Weaknesses (CWE)
References
- https://www.qnap.com/en/security-advisory/qsa-26-10Broken LinkVendor Advisory
FAQ
What is CVE-2025-66281?
CVE-2025-66281 is a vulnerability with a CVSS score of 7.2 (HIGH). A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS)...
How severe is CVE-2025-66281?
CVE-2025-66281 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-66281?
Check the references section above for vendor advisories and patch information. Affected products include: Qnap Qts, Qnap Quts Hero.