IPv6 sendd in Juniper Junos 12.1X44 before 12.1X44-D51 12.1X46 before 12.1X46-D36 12.1X46 before 12.1X46-D40 12.1X47 before 12.1X47-D25 12.3 before 12.3R10 12.3X48 before 12.3X48-D20 13.2 before 13.2R8 13.3 before 13.3R6 14.1 before 14.1R5 14.2 before 14.2R3 15.1 before 15.1R1 and 15.1X49 before 15.1X49-D20 when the \set protocols neighbor-discovery secure security-level default\ option is configured allows remote attackers to cause a denial of service (CPU consumption) via a crafted Secure Neighbor Discovery (SEND) Protocol packet.