CVE-2026-11826 OpenPLC_v3 Heap-Based Buffer Overflow in Modbus Master getData()

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...