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Tested successfully on HP LoadRunner 11.50 / Windows XP SP3. I have not been able to exploit reliably on other Windows versions due to memory protections. Maybe someone would like to give a chance. Windows XP SP3 is still a supported platform for HP LoadRunner. Maybe still could be possible to exploit on other platforms, but I don't spot how to make it reliable. And don't want the reversing time invested to get the vulnerability so here it is.
Verification
See the demo: