CVE-2026-10703 | EIPStackGroup OpENer up to 2.3.0 SendRRData cipmessagerouter.c CreateMessageRouterRequestStructure use after free (Issue 566)

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.