CVE-2025-4679: Synology Active Backup For Microsoft 365

Medium severity, CVSS 6.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A vulnerability in Synology Active Backup for Microsoft 365 allows remote authenticated attackers to obtain sensitive information via unspecified vectors.

Affected products

• Synology Active Backup For Microsoft 365: affected versions not specified

Published 2025-05-16. Last modified 2026-06-17.