CVE-2006-6931: Snort

Medium severity, CVSS 5.0. EPSS: 2.4% chance of exploitation in the next 30 days.

Algorithmic complexity vulnerability in Snort before 2.6.1, during predicate evaluation in rule matching for certain rules, allows remote attackers to cause a denial of service (CPU consumption and detection outage) via crafted network traffic, aka a "backtracking attack."

Affected products

• Snort Snort: up to and including 2.6.2

Published 2007-01-16. Last modified 2026-06-16.