SAP NetWeaver AS ABAP, versions 740, 750, 751, 752, 753, 754, 755, allows an unauthenticated attacker to prevent legitimate users from accessing a service, either by crashing or flooding the service, this has a high impact on the availability of the service.
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564760476