CVE-2011-4022: Cisco Intrusion Prevention System

Medium severity, CVSS 5.0. EPSS: 1.3% chance of exploitation in the next 30 days.

The sensor in Cisco Intrusion Prevention System (IPS) 7.0 and 7.1 allows remote attackers to cause a denial of service (file-handle exhaustion and mainApp hang) by making authentication attempts that exceed the configured limit, aka Bug ID CSCto51204.

Affected products

• Cisco Intrusion Prevention System: version 7.0 only; version 7.1 only

Published 2012-05-03. Last modified 2026-06-16.