In certain conditions, SAP NetWeaver Application Server ABAP allows an authenticated attacker to craft a Remote Function Call (RFC) request to restricted destinations, which can be used to expose credentials for a remote service. These credentials can then be further exploited to completely compromise the remote service, potentially resulting in a significant impact on the confidentiality, integrity, and availability of the application.
https://www.securityweek.com/sap-patches-critical-vulnerability-in-netweaver/
https://securityaffairs.com/171839/security/sap-fixed-critical-ssrf-flaw-netweaver.html