Timergrp module in Huawei DP300 V500R002C00; RP200 V500R002C00; V600R006C00; TE30 V100R001C10; V500R002C00; V600R006C00; TE40 V500R002C00; V600R006C00; TE50 V500R002C00; V600R006C00; TE60 V100R001C10; V500R002C00; V600R006C00 have an DoS vulnerability due to insufficient validation of the parameter. An authenticated local attacker may call a special API with special parameter, which cause an infinite loop. Successful exploit of this vulnerability can allow an attacker to launch DOS attack.