CVE-2017-6552: Sagemcom Livebox Firmware

High severity, CVSS 7.5. EPSS: 4.6% chance of exploitation in the next 30 days.

Livebox 3 Sagemcom SG30_sip-fr-5.15.8.1 devices have an insufficiently large default value for the maximum IPv6 routing table size: it can be filled within minutes. An attacker can exploit this issue to render the affected system unresponsive, resulting in a denial-of-service condition for telephone, Internet, and TV services.

Affected products

• Sagemcom Livebox Firmware: version 5.15.8.1 only

Published 2017-03-09. Last modified 2026-06-17.