sbomify Insights

Search by CVE or GitHub advisory id, package name or title.

CVE-2020-7538 Denial of service in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions)

High 7.5 Published Updated

A specially crafted Modbus request can crash the PLC simulator in EcoStruxure Control Expert, causing a denial of service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-7538?

CVE-2020-7538 is a high-severity denial of service vulnerability in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions), published on 19 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-754

Which versions are affected by CVE-2020-7538?

It affects 1 product.

Products include Schneider-Electric Ecostruxure Control Expert.

How do I fix CVE-2020-7538?

No fix has been published for CVE-2020-7538 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-7538 being exploited?

There is no known exploitation of CVE-2020-7538 in the wild and no public exploit code.

Sources

Also known as GHSA-6xcf-xj69-qm4j.

Is CVE-2020-7538 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free