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.