A potential security vulnerability has been identified in HPE Integrated Lights-Out 5 (iLO 5) and Integrated Lights-Out 4 (iLO 4) firmware. The vulnerability could be remotely exploited to disclose the serial number and other information.
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf04069en_us