Vulnerability in Schneider-Electric Ecostruxure Control Expert

CVE-2020-7538

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause a crash of the PLC simulator present in EcoStruxureª Control Expert software when receiving a specially crafted request over Modbus.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.0th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-7538: held from 0.013 to 0.013.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-7538?
CVE-2020-7538 is a high-severity vulnerability in Schneider-Electric Ecostruxure Control Expert, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.5/10. Published 2020-11-19.
How severe is CVE-2020-7538?
High severity. CVSS v3 base score is 7.5 out of 10.