scripts/cronscript.php in SysCP 1.2.15 and earlier includes and executes arbitrary PHP scripts that are referenced by the panel_cronscript table in the SysCP database, which allows attackers with database write privileges to execute arbitrary code by constructing a PHP file and adding its filename to this table.
PHP remote file inclusion vulnerability in SysCP 1.2.10 and earlier allows remote attackers to execute arbitrary PHP code via the language parameter.