Description
A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes.
We have already fixed the vulnerability in the following version:
QuTS hero h5.3.2.3354 build 20251225 and later
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| QNAP Systems | QuTS hero | h5.3.x – < h5.3.2.3354 build 20251225 | h5.3.2.3354 build 20251225 |
Advisories 1
- WID-SEC-2026-0399 QNAP NAS QTS und QuTS hero: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 11, 2026