QNAP NAS: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
WID-SEC-2026-0266 · first 30.01.2026 · updated 10.06.2026 · CVSS 7,3
What it is about
QNAP ist ein Hersteller von NAS (Network Attached Storage) Lösungen. Ein Angreifer kann eine Schwachstelle in QNAP NAS ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
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
- Sicherheitsvorkehrungen zu umgehen
Am I affected?
Affected according to the BSI:
- QNAP NAS <QTS 5.2.x
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.x
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
CVE: CVE-2025-66276
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.