A vulnerability marked as critical has been reported in EIPStackGroup OpENer up to 2.3.0 . Affected is the function CreateMessageRouterRequestStructure of the file cipmessagerouter.c of the component SendRRData Handler . The manipulation leads to use after free. This vulnerability is referenced as CVE-2026-10703 . Remote exploitation of the attack is possible. Furthermore, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.