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.