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 5.2.8.3332 build 20251128 and later
QuTS hero h5.2.8.3321 build 20251117 and later
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| QNAP Systems | QTS | 5.2.x – < 5.2.8.3332 build 20251128 | 5.2.8.3332 build 20251128 |
| QNAP Systems | QuTS hero | h5.2.x – < h5.2.8.3321 build 20251117 | h5.2.8.3321 build 20251117 |
Advisories 1
- WID-SEC-2026-0399 QNAP NAS QTS und QuTS hero: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 11, 2026