CVE-2020-28211

Name: CVE-2020-28211
Creator: NVD / NIST
Published: 2020-11-19T22:15:13.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2020-28211 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A CWE-863: Incorrect Authorization vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause bypass of authentication when overwriting memory using a debugger.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

A CWE-863: Incorrect Authorization vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause bypass of authentication when overwriting memory using a debugger.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.32%

24.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Schneider-Electric	Ecostruxure Control Expert	All versions

References

https://www.se.com/ww/en/download/document/SEVD-2020-315-07Patch, Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-315-07Patch, Vendor Advisory

Timeline

Published: Nov 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28211?

How severe is CVE-2020-28211?

CVE-2020-28211 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28211?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-28211?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST