CVE-2020-27649: Synology Router Manager

Critical severity, CVSS 9.0. EPSS: 0.7% chance of exploitation in the next 30 days.

Improper certificate validation vulnerability in OpenVPN client in Synology Router Manager (SRM) before 1.2.4-8081 allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Affected products

• Synology Router Manager: from 1.2, before 1.2.4-8081 (fixed in 1.2.4-8081)

Published 2020-10-29. Last modified 2026-06-17.