What is CVE-2020-10620?

CVE-2020-10620 is a critical-severity vulnerability in Opto22 Softpac Project, classified under Improper Authorization. CVSS score: 9.8/10. Published 2020-05-14.

How severe is CVE-2020-10620?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Opto22 Softpac Project

CVE-2020-10620

Opto 22 SoftPAC Project Version 9.6 and prior. SoftPAC communication does not include any credentials. This allows an attacker with network access to directly communicate with SoftPAC, including, for example, stopping the service remotely.

Published 2020-05-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Opto22 Softpac Project
Opto 22 Softpac Project — versions SoftPAC Project Version 9.6 and prior

Weakness classification (CWE)

References

www.us-cert.gov/ics/advisories/icsa-20-135-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2020-10620?: CVE-2020-10620 is a critical-severity vulnerability in Opto22 Softpac Project, classified under Improper Authorization. CVSS score: 9.8/10. Published 2020-05-14.
How severe is CVE-2020-10620?: Critical severity. CVSS v3 base score is 9.8 out of 10.