Delta Industrial Automation COMMGR from Delta Electronics versions 1.08 and prior with accompanying PLC Simulators (DVPSimulator EH2 EH3 ES2 SE SS2 and AHSIM_5x0 AHSIM_5x1) utilize a fixed-length stack buffer where an unverified length value can be read from the network packets via a specific network port causing the buffer to be overwritten. This may allow remote code execution cause the application to crash or result in a denial-of-service condition in the application server.