Synology · Diskstation Manager · CVE-2026-40539
**Name of the Vulnerable Software and Affected Versions**
Synology DiskStation Manager versions prior to 7.2.1-69057-10
Synology DiskStation Manager versions prior to 7.2.2-72806-7
Synology DiskStation Manager versions prior to 7.3.2-86009-2
**Description**
An improper certificate validation issue exists within the Email API. This flaw allows man-in-the-middle attackers to read or write arbitrary files and perform denial-of-service attacks.
**Recommendations**
Update Synology DiskStation Manager to version 7.2.1-69057-10 or later.
Update Synology DiskStation Manager to version 7.2.2-72806-7 or later.
Update Synology DiskStation Manager to version 7.3.2-86009-2 or later.