A vulnerability categorized as critical has been discovered in seladb PcapPlusPlus 25.05 . This impacts the function pcpp::ModbusLayer::getLength in the library Packet++/header/ModbusLayer.h of the component Modbus Protocol Handler . The manipulation of the argument length results in heap-based buffer overflow. This vulnerability is reported as CVE-2026-13590 . The attack can be launched remotely. Moreover, an exploit is present. Applying a patch is advised to resolve this issue.