CVE-2018-7843

Public Exploit

Description

A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service when reading memory blocks with an invalid data size or with an invalid data offset in the controller over Modbus.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 14.76% Top 10%
Vendor Advisory schneider-electric.com
Affected: n/a Modicon M580 Modicon M340 Modicon Quantum Modicon Premium
Published at:
Updated at:

References

Link Tags
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/ vendor advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0738 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2018-7843?
CVE-2018-7843 has been scored as a high severity vulnerability.
How to fix CVE-2018-7843?
To fix CVE-2018-7843, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7843 being actively exploited in the wild?
It is possible that CVE-2018-7843 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~15% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-7843?
CVE-2018-7843 affects n/a Modicon M580 Modicon M340 Modicon Quantum Modicon Premium.
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