IntelliVue Patient Monitors MP Series (including MP2/X2/MP30/MP50/MP70/NP90/MX700/800) Rev B-M IntelliVue Patient Monitors MX (MX400-550) Rev J-M and (X3/MX100 for Rev M only) and Avalon Fetal/Maternal Monitors FM20/FM30/FM40/FM50 with software Revisions F.0 G.0 and J.3 have a vulnerability that exposes an \echo\ service in which an attacker-sent buffer to an attacker-chosen device address within the same subnet is copied to the stack with no boundary checks hence resulting in stack overflow.