Buffer overflow on the Allied Telesis AR440S, AR441S, AR442S, AR745, AR750S, AR750S-DP, AT-8624POE, AT-8624T/2M, AT-8648T/2SP, AT-8748XL, AT-8848, AT-9816GB, AT-9924T, AT-9924Ts, CentreCOM AR415S, CentreCOM AR450S, CentreCOM AR550S, CentreCOM AR570S, CentreCOM 8700SL, CentreCOM 8948XL, CentreCOM 9924SP, CentreCOM 9924T/4SP, Rapier 48i, and SwitchBlade4000 with firmware before 2.9.1-21 allows remote attackers to execute arbitrary code via a crafted HTTP POST request.