Buffer Overflow Vulnerability in OpenPLC Controller: Potential Runtime Crash and Unspecified Impact

CVE-2018-20818 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

A buffer overflow vulnerability was discovered in the OpenPLC controller, in the OpenPLC_v2 and OpenPLC_v3 versions. It occurs in the modbus.cpp mapUnusedIO() function, which can cause a runtime crash of the PLC or possibly have unspecified other impact.

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