JScript Runtime - Global Scope

test.wsf

<?xml version="1.0" encoding="utf-8"?>
<package>
<job id="Test">
    <script language="JScript"><![CDATA[
!function(global) {
	
	global.testMe = function() {
		// this never executes
		WScript.StdOut.WriteLine("Got here.");
		return "test";
	};

}(this);

function main() {
	// outputs 'function'
	WScript.StdOut.WriteLine(typeof testMe);
	
	// does nothing
	var x = testMe();
	WScript.StdOut.WriteLine(x);
}

main();
testMe();

	]]></script>
</job>
</package>

0xc0000005 is a memory access violation. Is it exploitable?