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**Name of the Vulnerable Software and Affected Versions** PX4-Autopilot version 1.12.3 **Description** A stack-based buffer overflow issue affects the `MavlinkReceiver::handle message trajectory representation waypoints` function in the `mavlink receiver.cpp` file of the TRAJECTORY REPRESENTATION WAYPOINTS Message Handler component. This issue can be exploited with local access, leading to potential crashes. The exploit has been publicly disclosed. **Recommendations** For PX4-Autopilot version 1.12.3, consider disabling the `MavlinkReceiver::handle message trajectory representation waypoints` function as a temporary workaround until a patch is available. Restrict access to the TRAJECTORY REPRESENTATION WAYPOINTS Message Handler component to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.