Vulnerability Description
An integer overflow or wraparound 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 compromise the security of the system. 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-2025-66280?
CVE-2025-66280 is a vulnerability with a CVSS score of 7.2 (HIGH). An integer overflow or wraparound vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulne...
How severe is CVE-2025-66280?
CVE-2025-66280 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-2025-66280?
Check the references section above for vendor advisories and patch information. Affected products include: Qnap Qts, Qnap Quts Hero.