CVE-2018-7851

Description

CWE-119: Buffer errors vulnerability exists in Modicon M580 with firmware prior to V2.50, Modicon M340 with firmware prior to V3.01, BMxCRA312xx with firmware prior to V2.40, All firmware versions of Modicon Premium and 140CRA312xxx when sending a specially crafted Modbus packet, which could cause a denial of service to the device that would force a restart to restore availability.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.35%
Vendor Advisory schneider-electric.com
Affected: n/a Modicon M580 with firmware prior to V2.50 Modicon M340 with firmware prior to V3.01 BMxCRA312xx with firmware prior to V2.40 All firmware versions of Modicon Premium and 140CRA312xxx
Published at:
Updated at:

References

Link Tags
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-10/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-7851?
CVE-2018-7851 has been scored as a medium severity vulnerability.
How to fix CVE-2018-7851?
To fix CVE-2018-7851, 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-2018-7851 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-7851 is being actively exploited. 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-2018-7851?
CVE-2018-7851 affects n/a Modicon M580 with firmware prior to V2.50 Modicon M340 with firmware prior to V3.01 BMxCRA312xx with firmware prior to V2.40 All firmware versions of Modicon Premium and 140CRA312xxx.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.