Internet of Things (IoT) devices manipulate sensitive data leading to strict security needs. They face both software and physical attacks due to their network connectivity and their proximity to attackers. These devices are usually built around low-cost and low-power processors. In this paper, we study the impact of Fault Injection Attacks (FIA) on the D-RI5CY processor integrating a Dynamic Information Flow Tracking (DIFT) mechanism against software threats. Our results highlight the high sensitivity of the target to multiple fault types at multiple spatial and temporal locations.