What is CVE-2020-9473?

CVE-2020-9473 is a medium-severity vulnerability in Siedle Sg 150-0, classified under Missing Authentication for Critical Function. CVSS score: 6.6/10. Published 2020-04-06.

How severe is CVE-2020-9473?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Auth bypass in Siedle Sg 150-0

CVE-2020-9473

The S. Siedle & Soehne SG 150-0 Smart Gateway before 1.2.4 has a passwordless ftp ssh user. By using an exploit chain, an attacker with access to the network can get root access on the gateway.

Vulnerability class: Broken Authentication

Published 2020-04-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.8th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.8% 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

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

research.hisolutions.com/2020/04/open-the-gates-insecurity-of-cloudless-smart-d… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-9473?: CVE-2020-9473 is a medium-severity vulnerability in Siedle Sg 150-0, classified under Missing Authentication for Critical Function. CVSS score: 6.6/10. Published 2020-04-06.
How severe is CVE-2020-9473?: Medium severity. CVSS v3 base score is 6.6 out of 10.