Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 has no authentication for /cnr requests.
https://www.zyxel.com/support/vulnerabilities-of-CloudCNM-SecuManager.shtml
https://pierrekim.github.io/blog/2020-03-09-zyxel-secumanager-0day-vulnerabilities.html#xmpp-no-auth-cleartext
Source: Mitre, NVD
Published: 2020-06-26
Updated: 2026-06-17
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High
EPSS: 0.00217