Synology DiskStation Manager: Schwachstelle ermöglicht Offenlegung von Informationen
WID-SEC-2026-1261 · first 24.04.2026 · updated 24.04.2026 · CVSS 4,3
What it is about
DiskStation Manager (DSM) ist ein webbasiertes Betriebssystem für Synology NAS-Geräte. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Synology DiskStation Manager ausnutzen, um Informationen offenzulegen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Synology DiskStation Manager <7.3-81180
- Synology DiskStation Manager <7.2.2-72806-7
- Synology DiskStation Manager <7.2.1-69057-10
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Synology DiskStation Manager 7.3-81180
- Synology DiskStation Manager 7.2.2-72806-7
- Synology DiskStation Manager 7.2.1-69057-10
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)
- Synology Security Advisory vom 2026-04-23 www.synology.com
CVE: CVE-2026-40540
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.