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CVE-2006-4911

20
FAUCET Score

CVE-2006-4911 describes an unspecified vulnerability in Cisco IPS Sensor Software versions 5.0 before 5.0(6p2) and 5.1 before 5.1(2), affecting devices operating in inline or promiscuous mode. This flaw allows remote attackers to bypass traffic inspection by sending a crafted sequence of fragmented IP packets. With a CVSS score of 7.5, it is considered highly severe due to its network-based attack vector, low access complexity, and potential for partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0, < 5.0\(6p2\)CPE matchmatch criteria
cpe:2.3:a:cisco:ips_sensor_software:*:*:*:*:*:*:*:*
>= 5.1, < 5.1\(2\)CPE matchmatch criteria
cpe:2.3:a:cisco:ips_sensor_software:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.20%
Probability of exploitation in next 30 days
EPSS Percentile
89.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0420 is in the 82nd percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/22022
Third Party Advisory
securitytracker.com / id
Third Party AdvisoryVDB Entry
exchange.xforce.ibmcloud.com / vulnerabilities/29058
Third Party AdvisoryVDB Entry
cisco.com / warp/public/707/cisco-sa-20060920-ips.shtml
Vendor Advisory
kb.cert.org / vuls/id/658884
Third Party AdvisoryUS Government Resource
osvdb.org / 29036
Broken Link
securityfocus.com / bid/20127
Third Party AdvisoryVDB Entry
vupen.com / english/advisories/2006/3721
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