Buffer overflow in the Application Specific Packet Filtering (ASPF) functionality in the Huawei IPS Module NGFW Module NIP6300 NIP6600 Secospace USG6300 USG6500 USG6600 USG9500 and AntiDDoS8000 devices with software before V500R001C20SPC100 allows remote attackers to cause a denial of service or execute arbitrary code via a crafted packet related to \illegitimate parameters.\