A remote authentication bypass vulnerability was discovered in HPE Cray Legacy Shasta System Solutions; HPE Slingshot; and HPE Cray EX supercomputers versions: Prior to node controller firmware associated with HPE Cray EX liquid cooled blades, and all versions of chassis controller firmware associated with HPE Cray EX liquid cooled cabinets prior to 1.6.27/1.5.33/1.4.27; All Slingshot versions prior to 1.7.2; All versions of node controller firmware associated with HPE Cray EX liquid cooled blades, and all versions of chassis controller firmware associated with HPE Cray EX liquid cooled cabinets prior to 1.6.27/1.5.33/1.4.27. HPE has provided a software update to resolve this vulnerability in HPE Cray Legacy Shasta System Solutions, HPE Slingshot, and HPE Cray EX Supercomputers.