CVE-2017-11157: Synology Cloud Station Backup

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Multiple untrusted search path vulnerabilities in the installer in Synology Cloud Station Backup before 4.2.5-4396 on Windows allow local attackers to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse (1) shfolder.dll, (2) ntmarta.dll, (3) secur32.dll or (4) dwmapi.dll file in the current working directory.

Affected products

• Synology Cloud Station Backup: up to and including 4.2.4-4393

Published 2017-08-30. Last modified 2026-06-17.