SAP 6.4 before 6.40 patch 4, 6.2 before 6.20 patch 1364, 4.6 before 4.6D patch 1767, 45 before 45B patch 913, 40 before 40B patch 1008, and 31 before 31I patch 735 do not properly restrict process execution by lnaxdm/sapsys, which allows remote attackers to execute arbitrary code via a certain UDP packet that ends with the name of a local executable file, aka the "FX SAP R/3 gwrd vuln."