libmodbus v3.1.10 is vulnerable to Buffer Overflow via the modbuswritebits function. This issue can be triggered when the function is fed with specially crafted input, which leads to out-of-bounds read and can potentially cause a crash or other unintended behaviors.

libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in readiostatus function in src/modbus.c.

An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUSFCWRITEMULTIPLEREGISTERS case, aka VD-1301.

An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUSFCWRITEMULTIPLECOILS case, aka VD-1302.