The Workload Automation DE 11.3 SP3, Desktop Client 11.3 SP3, DE Web Services 11.3 SP3 and Web Client 11.3 SP3 are shipped with JRE 1.7.
You can update to the latest JRE 1.8 by following the procedure explained in the PIB RI82420.Steps
1. Login to support.broadcom.com and Sign In
2. Click on Product Information, and search for 'WORKLOAD AUTOMATION DE'
3. Search for RI82420ALL-UPGRADE JRE USED BY CAWADE PRODUCT Fix #RI82420
4. Follow the procedure in the RI82420.txt to update to the latest JRE 1.8.