CVE-2025-66274
Medium · 4.9CVSS
4.9
EPSS
0.4%
Published
Feb 11, 2026
CISA due date
—
The record
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
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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