CVE-2020-27657: Synology Router Manager

Medium severity, CVSS 5.9. EPSS: 0.6% chance of exploitation in the next 30 days.

Cleartext transmission of sensitive information vulnerability in DDNS in Synology Router Manager (SRM) before 1.2.4-8081 allows man-in-the-middle attackers to eavesdrop authentication information of DNSExit via unspecified vectors.

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.