Saia Burgess PCD1.M0xx0, PCD1.M2xx0, PCD2.M5xx0, PCD3.Mxx60, PCD3.Mxxx0, PCD7.D4xxD, PCD7.D4xxV, PCD7.D4xxWTPF, and PCD7.D4xxxT5F devices before 1.24.50 and PCD3.T665 and PCD3.T666 devices before 1.24.41 have hardcoded credentials, which allows remote attackers to obtain administrative access via an FTP session.