CVE-2011-3326: Quagga

Medium severity, CVSS 5.0. EPSS: 4.6% chance of exploitation in the next 30 days.

The ospf_flood function in ospf_flood.c in ospfd in Quagga before 0.99.19 allows remote attackers to cause a denial of service (daemon crash) via an invalid Link State Advertisement (LSA) type in an IPv4 Link State Update message.

Affected products

• Quagga Quagga: up to and including 0.99.18; version 0.95 only; version 0.96 only; version 0.96.1 only; version 0.96.2 only; version 0.96.3 only; …

Published 2011-10-10. Last modified 2026-06-16.