What is CVE-2020-15314?

CVE-2020-15314 is a medium-severity vulnerability in Zyxel Cloudcnm Secumanager, classified under Use of Hard-coded Credentials. CVSS score: 5.9/10. Published 2020-06-29.

How severe is CVE-2020-15314?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Zyxel Cloudcnm Secumanager

CVE-2020-15314

Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 has a hardcoded RSA SSH key for the root account.

Published 2020-06-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Zyxel Cloudcnm Secumanager — versions 3.1.0, 3.1.1

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

pierrekim.github.io/blog/2020-03-09-zyxel-secumanager-0day-vulnerabilities.html (Technical Description, Exploit, Third Party Advisory)
www.zyxel.com/support/vulnerabilities-of-CloudCNM-SecuManager.shtml (Vendor Advisory)

Frequently asked questions

What is CVE-2020-15314?: CVE-2020-15314 is a medium-severity vulnerability in Zyxel Cloudcnm Secumanager, classified under Use of Hard-coded Credentials. CVSS score: 5.9/10. Published 2020-06-29.
How severe is CVE-2020-15314?: Medium severity. CVSS v3 base score is 5.9 out of 10.