In FreeBSD 13.0-STABLE before n245765-bec0d2c9c841, 12.2-STABLE before r369859, 11.4-STABLE before r369866, 13.0-RELEASE before p1, 12.2-RELEASE before p7, and 11.4-RELEASE before p10, missing message validation in libradius(3) could allow malicious clients or servers to trigger denial of service in vulnerable servers or clients respectively.
https://security.netapp.com/advisory/ntap-20210713-0003/
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:12.libradius.asc