OpenIPMI before 2.0.36 has an out-of-bounds array access (for authentication type) in the ipmi_sim simulator, resulting in denial of service or (with very low probability) authentication bypass or code execution.
https://sourceforge.net/p/openipmi/code/ci/b52e8e2538b2b48ef6b63bff12b5cc9e2d52eff1/
https://sourceforge.net/p/openipmi/code/ci/4c129d0540f3578ecc078d8612bbf84b6cd24c87