Sepsis is a life-threatening organ dysfunction resulting from a dysregulated host response to infection. Septic shock, a severe subset of sepsis, must be promptly recognized and managed as a medical emergency. We present the case of a 51-year-old male who developed shock during hospitalization for infected leg ulcers, with a background of chronic heart failure (HF), hypertension, and poorly controlled type 2 diabetes mellitus. Despite his history of HF, bedside echocardiography revealed low systemic vascular resistance and preserved cardiac output, findings more consistent with septic shock than cardiogenic shock. This case underscores the pivotal role of early hemodynamic assessment, particularly with echocardiography, in accurately identifying the type of shock in patients with pre-existing HF. Differentiating the underlying etiology is essential to initiate appropriate therapy and improve clinical outcomes.