CVE-2026-54410 [HIGH] – nanoMODBUS through v1.23.0 contains an off-by-one buffer overflow in the recv_msg_header f

nanoMODBUS through v1.23.0 contains an off-by-one buffer overflow in the recv_msg_header function of the Modbus/TCP server that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of the 260-byte receive buffer by sending a crafted MBAP frame whose Length field is set to 255.