According to feedback from the TP developer community, CPU leases with user accounts have expired, but have not been recycled by the system. PeckShield security personnel found that many accounts in the EOSREX system have expired CPU leases, but the expired EOS has not been recycled in time and can continue to be used. PeckShield security personnel further analyzed that the processing of expired CPU orders of the REX system, depending on the operation of runrex, needs to be embedded in the operation of buying and selling REX, renting CPU and so on. At present, EIDOS mining has made REX's recent user operations less, so orders with expired CPU leases have not been processed in time. However, EOS community users do not have to worry too much about the need to process expired orders by performing a rexexec operation.