CVE-2011-0454: Iij seil/b1

High severity, CVSS 8.3. EPSS: 2.6% chance of exploitation in the next 30 days.

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.

Affected products

• Iij seil/b1
• Iij seil/b1 Firmware: version 1.00 only; version 2.01 only; version 2.10 only; version 2.20 only; version 2.30 only; version 2.40 only; …
• Iij Seil/neu 2fe Plus
• Iij Seil/neu 2fe Plus Firmware: version 1.80 only; version 1.81 only; version 1.82 only; version 1.83 only; version 1.84 only; version 1.85 only; …
• Iij Seil/turbo
• Iij Seil/turbo Firmware: version 1.80 only; version 1.81 only; version 1.82 only; version 1.83 only; version 1.84 only; version 1.85 only; …
• Iij seil/x1
• Iij seil/x1 Firmware: version 1.00 only; version 1.10 only; version 1.11 only; version 1.20 only; version 1.21 only; version 1.22 only; …
• Iij seil/x2
• Iij seil/x2 Firmware: version 1.00 only; version 1.10 only; version 1.11 only; version 1.20 only; version 1.21 only; version 1.22 only; …
• Iij seil/x86
• Iij seil/x86 Firmware: version 1.00 only; version 1.61 only

Published 2011-03-01. Last modified 2026-06-16.