CVE-2006-4911: Cisco Ips Sensor Software

High severity, CVSS 7.5. EPSS: 4.2% chance of exploitation in the next 30 days.

Unspecified vulnerability in Cisco IPS 5.0 before 5.0(6p2) and 5.1 before 5.1(2), when running in inline or promiscuous mode, allows remote attackers to bypass traffic inspection via a "crafted sequence of fragmented IP packets".

Affected products

• Cisco Ips Sensor Software: from 5.0, before 5.0\(6p2\) (fixed in 5.0\(6p2\)); from 5.1, before 5.1\(2\) (fixed in 5.1\(2\))

Published 2006-09-21. Last modified 2026-06-16.