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One of the key messages broadcasted by security professionals is: "Patch, patch and patch again!". But they are nasty vulnerabilities that remain exploited by attackers even if they are pretty old. %%cve:2017-11882%% is one of them: this remote code execution affects Microsoft Office and, more precisely, the good old "Equation Editor". This tool was even killed by Microsoft due to numerous security issues[1]. But it still remains used by attackers to spread modern malware.