Huawei S5300 with software V200R003C00 V200R007C00 V200R008C00 V200R009C00; S5700 with software V200R001C00 V200R002C00 V200R003C00 V200R005C00 V200R005C03 V200R007C00 V200R008C00 V200R009C00; S6300 with software V200R003C00 V200R005C00 V200R008C00 V200R009C00; S6700 with software V200R001C00 V200R001C01 V200R002C00 V200R003C00 V200R005C00 V200R008C00 V200R009C00; S7700 with software V200R007C00 V200R008C00 V200R009C00; S9300 with software V200R007C00 V200R008C00 V200R009C00; S9700 with software V200R007C00 V200R008C00 V200R009C00; and S12700 with software V200R007C00 V200R007C01 V200R008C00 V200R009C00 allow the attacker to cause a denial of service condition by sending malformed MPLS packets.