Delinea Secret Server before 11.7.000001 allows attackers to bypass authentication via the SOAP API in SecretServer/webservices/SSWebService.asmx. This is related to a hardcoded key, the use of the integer 2 for the Admin user, and removal of the oauthExpirationId attribute.
The use of a hard-coded cryptographic key significantly increases the possibility that encrypted data may be recovered.