It is possible for a malicious application or malware to execute JavaScript in a SAP Fiori application. This can include reading and writing of information and calling device specific JavaScript APIs in the application. SAP Fiori Client version 1.11.5 in Google Play store addresses these issues and users must update to that version.
See SAP Note 2691126 – [CVE-2018-2485] Security vulnerabilities in SAP Fiori Client
Version 16 from 13.11.2018 in English