The User Management Engine (UME) in SAP NetWeaver 7.4 allows attackers to decrypt unspecified data via unknown vectors, aka SAP Security Note 2191290.
https://www.exploit-db.com/exploits/43495/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-3001
https://erpscan.io/press-center/blog/sap-security-notes-january-2016-review/
https://erpscan.io/advisories/erpscan-16-003-sap-netweaver-7-4-cryptographic-issues/