CVE-2018-7856

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 a possible denial of Service when writing invalid memory blocks to the controller over Modbus.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.49%
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/ mitigation vendor advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2018-7856?
CVE-2018-7856 has been scored as a high severity vulnerability.
How to fix CVE-2018-7856?
To fix CVE-2018-7856, 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-2018-7856 being actively exploited in the wild?
It is possible that CVE-2018-7856 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-7856?
CVE-2018-7856 affects n/a Modicon M580 Modicon M340 Modicon Quantum Modicon Premium.
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