CVE-2020-7538 — HIGH (7.5) — White Hats Nepal

Vulnerability Description

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.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Schneider-Electric	Ecostruxure Control Expert	All versions

Related Weaknesses (CWE)

CWE-754

References

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

FAQ

What is CVE-2020-7538?

CVE-2020-7538 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...

How severe is CVE-2020-7538?

CVE-2020-7538 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-7538?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Ecostruxure Control Expert.