CVE-2018-7851

moderate-risk
Published 2019-05-22

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.

Do I need to act?

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0.33% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (5)

M580 Firmware
M340 Firmware
Bmx\/E Cra Firmware
140Cra312Xxx Firmware

Affected Vendors

Schneider-Electric

References (2)

Vendor Advisory https://www.schneider-electric.com/en/download/document/SEVD-2019-134-10/
Vendor Advisory https://www.schneider-electric.com/en/download/document/SEVD-2019-134-10/
37
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 12/34 · Low