CVE-2017-11156: Synology Download Station

High severity, CVSS 7.8. EPSS: 2.3% chance of exploitation in the next 30 days.

Synology Download Station 3.8.x before 3.8.5-3475 and 3.x before 3.5-2984 uses weak permissions (0777) for ui/dlm/btsearch directory, which allows remote authenticated users to execute arbitrary code by uploading an executable via unspecified vectors.

Affected products

• Synology Download Station: version 3.2-2295 only; version 3.3-2382 only; version 3.3-2383 only; version 3.3-2386 only; version 3.4-2477 only; version 3.4-2478 only; …

Published 2017-08-14. Last modified 2026-06-17.