Synology has released an update with one important enhancement for the DiskStation Manager (DSM) 5.1. It is available for download on your DSM: Control Panel > Update & Restore.
It is always recommended that you install the latest update to obtain an even smoother user experience.
If you haven’t upgraded to DSM 5.1-5022, it can be found at Synology Download Center.
Version:5.1-5022 Update 3
Fixed a security vulnerability related to SAMBA (CVE-2015-0240).
* DSM 5.1’s availability depends on individual models. For more information, please refer to the Release Notes section in Download Center.