IPv6 function in Huawei Quidway S2700 V200R003C00SPC300, Quidway S5300 V200R003C00SPC300, Quidway S5700 V200R003C00SPC300, S2300 V200R003C00, V200R003C00SPC300T, V200R005C00, V200R006C00, V200R007C00, V200R008C00, V200R009C00, S2700 V200R005C00, V200R006C00, V200R007C00, V200R008C00, V200R009C00, S5300 V200R003C00, V200R003C00SPC300T, V200R003C00SPC600, V200R003C02, V200R005C00, V200R005C01, V200R005C02, V200R005C03, V200R005C05, V200R006C00, V200R007C00, V200R008C00, V200R009C00, S5700 V200R003C00, V200R003C00SPC316T, V200R003C00SPC600, V200R003C02, V200R005C00, V200R005C01, V200R005C02, V200R005C03, V200R006C00, V200R007C00, V200R008C00, V200R009C00, S600-E V200R008C00, V200R009C00, S6300 V200R003C00, V200R005C00, V200R007C00, V200R008C00, V200R009C00, S6700 V200R003C00, V200R005C00, V200R005C01, V200R005C02, V200R007C00, V200R008C00, V200R009C00 has an out-of-bounds read vulnerability. An unauthenticated attacker may send crafted malformed IPv6 packets to the affected products. Due to insufficient verification of the packets, successful exploit will cause device to reset.

Some Huawei S series switches have a DoS vulnerability. An unauthenticated remote attacker can send crafted packets to the affected device to exploit this vulnerability. Due to insufficient verification of the packets, successful exploitation may cause the device reboot and denial of service (DoS) condition. (Vulnerability ID: HWPSIRT-2019-03109)