CVE-2020-15336: Zyxel Cloudcnm Secumanager

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 has no authentication for /cnr requests.

Affected products

• Zyxel Cloudcnm Secumanager: version 3.1.0 only; version 3.1.1 only

Published 2020-06-26. Last modified 2026-06-17.