How severe is CVE-2006-4911?

CVE-2006-4911 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2006-4911 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4911?

CVE-2006-4911 affects Cisco Ips Sensor Software. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-4911?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2006-4911 published?

CVE-2006-4911 was published on 2006-09-21 and last updated on 2026-06-16.

CVE-2006-4911

CVE-2006-4911 is a high-severity vulnerability in Cisco Ips Sensor Software with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Ips Sensor Software
Published: 2006-09-21
Last modified: 2026-06-16

Description

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".

Frequently asked questions

What is CVE-2006-4911?: 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".
How severe is CVE-2006-4911?: CVE-2006-4911 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-4911 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4911?: CVE-2006-4911 affects Cisco Ips Sensor Software. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-4911?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2006-4911 published?: CVE-2006-4911 was published on 2006-09-21 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:cisco:ips_sensor_software:*:*:*:*:*:*:*:*

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