Directory traversal vulnerability in the SYNO.FileStation.Extract in Synology DiskStation Manager (DSM) 6.0.x before 6.0.3-8754-3 and before 5.2-5967-6 allows remote authenticated users to write arbitrary files via the dest_folder_path parameter.
https://www.synology.com/en-global/support/security/Synology_SA_17_70_DSM