CVE-2025-66281
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. Remote attackers can exploit this vulnerability to launch a denial-of-service (DoS) attack.
Risk Assessment
The organization may be exposed to DoS attacks, which can lead to service outages and potential financial losses.
Recommendation
It is recommended to update the system to QTS 5.2.9.3410 build 20260214 or later, or the appropriate QuTS hero versions to mitigate this vulnerability.
Original NVD description (English source)
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