DiskStation Manager (DSM < 7.2.1-69057-13, < 7.2.2-72806-10, < 7.3.2-86009-5, < 7.4.1-90080-1)

Synology DiskStation Manager (DSM) contains an authentication bypass vulnerability in its rsync implementation that allows remote attackers to read or write arbitrary files and trigger a denial-of-service.