Buffer overflow in the URL filtering function in Internet Initiative Japan SEIL/X1, SEIL/X2, and SEIL/B1 firmware 2.40 through 2.51 allows remote attackers to execute arbitrary code via unspecified vectors.

Internet Initiative Japan SEIL/X1, SEIL/X2, and SEIL/B1 firmware 2.30 through 2.51, when NAT is enabled, allows remote attackers to cause a denial of service (system restart) via crafted GRE packets.

The PPP Access Concentrator (PPPAC) on SEIL SEIL/x86 routers 1.00 through 3.10, SEIL/X1 routers 1.00 through 4.50, SEIL/X2 routers 1.00 through 4.50, SEIL/B1 routers 1.00 through 4.50, SEIL/Turbo routers 1.80 through 2.17, and SEIL/neu 2FE Plus routers 1.80 through 2.17 allows remote attackers to cause a denial of service (session termination or concentrator outage) via a crafted TCP packet.

npppd in the PPP Access Concentrator (PPPAC) on SEIL SEIL/x86 Fuji routers 1.00 through 3.30, SEIL/X1 routers 3.50 through 4.70, SEIL/X2 routers 3.50 through 4.70, and SEIL/B1 routers 3.50 through 4.70 allows remote attackers to cause a denial of service (infinite loop and device hang) via a crafted SSTP packet.

The IPv6 Unicast Reverse Path Forwarding (RPF) implementation on the SEIL/X1, SEIL/X2, and SEIL/B1 routers with firmware 1.00 through 2.73, when strict mode is used, does not properly drop packets, which might allow remote attackers to bypass intended access restrictions via a spoofed IP address.

Buffer overflow in the PPP Access Concentrator (PPPAC) on the SEIL/x86 with firmware 1.00 through 1.61, SEIL/B1 with firmware 1.00 through 3.11, SEIL/X1 with firmware 1.00 through 3.11, SEIL/X2 with firmware 1.00 through 3.11, SEIL/Turbo with firmware 1.80 through 2.10, and SEIL/neu 2FE Plus with firmware 1.80 through 2.10 might allow remote attackers to execute arbitrary code via a PPPoE packet.