Is CVE-2011-4022 being actively exploited?

CVE-2011-4022 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4022?

CVE-2011-4022 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2011-4022

MEDIUM · CVSS 5.0EPSS 1.3%EU EUVD

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.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-287
EPSS score: 1.3% (71th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-3975)
Published: May 3, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-3975 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

cisco / intrusion prevention system
cisco / intrusion prevention system

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Cisco Unified Wireless Network & Wireless Intrusion Prevention System Version: 7.0.230.0 - Cisco Systems, Inc. - Common Criteria Certificate Number: 2012/81 - archived

References

http://www.cisco.com/web/software/282549709/56954/IPS-7-1-3-E4_readme.txt

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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