CVE-2009-1572: Quagga

Medium severity, CVSS 5.0. EPSS: 3.5% chance of exploitation in the next 30 days.

The BGP daemon (bgpd) in Quagga 0.99.11 and earlier allows remote attackers to cause a denial of service (crash) via an AS path containing ASN elements whose string representation is longer than expected, which triggers an assert error.

Affected products

• Quagga Quagga: up to and including 0.99.11; version 0.95 only; version 0.96 only; version 0.96.1 only; version 0.96.2 only; version 0.96.3 only; …

Published 2009-05-06. Last modified 2026-06-16.