In FlexNet Publisher versions before Luton SP1 (11.14.1.1) running FlexNet Publisher Licensing Service on Windows platform, a boundary error related to a named pipe within the FlexNet Publisher Licensing Service can be exploited to cause an out-of-bounds memory read access and subsequently execute arbitrary code with SYSTEM privileges.
https://www.schneider-electric.com/en/download/document/SEVD-2018-144-01/
https://www.schneider-electric.com/en/download/document/SEVD-2018-137-01/
https://www.schneider-electric.com/en/download/document/SEVD-2018-046-01/
https://secuniaresearch.flexerasoftware.com/advisories/76368/