QNAP NAS: Mehrere Schwachstellen
WID-SEC-2026-0011 · first 05.01.2026 · updated 05.01.2026 · CVSS 7,7
What it is about
QNAP ist ein Hersteller von NAS (Network Attached Storage) Lösungen. Ein Angreifer kann diese Schwachstellen ausnutzen, um einen Denial of Service zu verursachen, Informationen offenzulegen und den Speicher zu korrumpieren.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service zu verursachen
- Informationen offenzulegen
- den Speicher zu korrumpieren
Am I affected?
Affected according to the BSI:
- QNAP NAS <QTS 5.2.7.3256 build 20250913
- QNAP NAS <QuTS hero h5.2.7.3256 build 20250913
- QNAP NAS <QuTS hero h5.3.1.3250 build 20250912
- QNAP NAS <QTS 5.2.8.3332 build 20251128
- QNAP NAS <QuTS hero h5.2.8.3321 build 20251117
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- QNAP NAS QTS 5.2.7.3256 build 20250913
- QNAP NAS QuTS hero h5.2.7.3256 build 20250913
- QNAP NAS QuTS hero h5.3.1.3250 build 20250912
- QNAP NAS QTS 5.2.8.3332 build 20251128
- QNAP NAS QuTS hero h5.2.8.3321 build 20251117
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- QNAP Security Advisory vom 2026-01-04 www.qnap.com
- QNAP Security Advisory vom 2026-01-04 www.qnap.com
CVE: CVE-2025-44013, CVE-2025-47208, CVE-2025-48721, CVE-2025-52426, CVE-2025-52430, CVE-2025-52431, CVE-2025-52863, CVE-2025-52864, CVE-2025-52872, CVE-2025-53405, CVE-2025-53414, CVE-2025-53589, CVE-2025-53590, CVE-2025-53591, CVE-2025-53592, CVE-2025-53593, CVE-2025-53596, CVE-2025-54164, CVE-2025-54165, CVE-2025-54166 …
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.