CVE-2025-66274
MediumCVSS 4.9Exploitation Probability (EPSS)
Low risk35th percentile - higher than 35% of all known CVEs
Summary
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. A remote attacker with an administrator account can exploit this vulnerability to launch a denial-of-service (DoS) attack.
Risk Assessment
The organization is at risk of DoS attacks that can lead to service unavailability and disruption of operations. The risk of serious security incidents increases if an attacker gains access to an administrator account.
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. 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 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.2.3354 build 20251225 and later QuTS hero h6.0.0.3397 build 20260206 and later