CVE-2025-66274
QTS, QuTS hero
CVSS Score
0.0
EPSS Score
0.1%
EPSS Percentile
35th
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
| CWE | CWE-476 |
| Vendor | qnap systems inc. |
| Product | qts |
| Published | Feb 11, 2026 |
| Last Updated | Jun 9, 2026 |
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Affected Versions
QNAP Systems Inc. / QTS
5.2.0 < 5.2.9.3410 build 20260214
QNAP Systems Inc. / QuTS hero
h5.2.0 < h5.2.9.3410 build 20260214 h5.3.0 < h5.3.2.3354 build 20251225 ? < h6.0.0.3397 build 20260206
References
Credits
coral