  The third and fourth cumulants of voltage in a current-biased diffusive metal
contact of resistance $R$ are calculated for arbitrary temperatures and
voltages using the semiclassical cascade approach. The third cumulant equals
$e^2R^3I/3$ at high temperatures and $4e^2R^3I/15$ at low temperatures, whereas
the fourth cumulant equals $2e^2R^3T/3$ at high temperatures and
$(34/105)e^3R^4I$ at low temperatures.
