CVE-2007-1398: Snort

High severity, CVSS 7.1. EPSS: 5.9% chance of exploitation in the next 30 days.

The frag3 preprocessor in Snort 2.6.1.1, 2.6.1.2, and 2.7.0 beta, when configured for inline use on Linux without the ip_conntrack module loaded, allows remote attackers to cause a denial of service (segmentation fault and application crash) via certain UDP packets produced by send_morefrag_packet and send_overlap_packet.

Affected products

• Snort Snort: version 2.6.1.1 only; version 2.6.1.2 only; version 2.7_beta1 only

Published 2007-03-10. Last modified 2026-06-16.