Solution : https://service.sap.com/sap/support/notes/1445409 (SAP Service marketplace login required)
Key words : 
security-relevant error, relevant security problem, terms security, rfcsdk reason, rfc libraries, release levels, downward-compatible, solution implement, rfc library, susceptible
Related Notes : 
       
| 1523254 | Update #1 to Security Note 1481924 | 
| 1481924 | Potential remote code execution in RFC lib | 
| 1481923 | |
| 27517 | Installing RFCSDK |