The number of embedded devices, or IoT devices, used in the market is increasing dramatically. By 2025, the estimated number of IoT devices used worldwide will be about 30.9 billion. However, the evolvement of these devices makes organizations an increasingly high-security concern. In 2019, the estimated percentage of attacks on IoT devices that impacted critical operations was 33 percent. In addition, IoT devices, unlike traditional PCs, has minimal system requirement, making them more challenging to update and secure. The threat to embedded devices' security primary is due to their different architecture compared to traditional PCs that security practitioners started using firmware testing and analysis tools to overcome. In this paper, we plan to extend the analysis of firmware testing tools in the context of the embedded device to include newly developed tools with some old tools analyzed in the past. We also plan to examine other factors that might contribute to the development of new tools. We consider a few tools that managed to discover new vulnerabilities and compare them based on the criteria we set. Essentially, we provide our evaluation of the tools and present the key findings
