Description
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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| QNAP Systems | QTS | 5.2.0 – < 5.2.9.3410 build 20260214 | 5.2.9.3410 build 20260214 |
| QNAP Systems | 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 | h5.2.9.3410 build 20260214 |
Advisories 1
- WID-SEC-2026-0399 QNAP NAS QTS und QuTS hero: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 11, 2026