What’s Vulnerable › Vulnerabilities

CVE-2006-4983

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2006-09-26 · updated 2026-06-16

Description

Cisco NAC allows quarantined devices to communicate over the network with (1) DNS, (2) DHCP, and (3) EAPoUDP, which allows attackers to bypass control methods by tunneling network traffic through one of these protocols.

Affected products

• Cisco Network Access Control: all versions

References

• http://www.insightix.com/files/pdf/Bypassing_NAC_Solutions_Whitepaper.pdf
• http://www.osvdb.org/30977
• http://www.securityfocus.com/archive/1/446421/100/0/threaded
• http://www.insightix.com/files/pdf/Bypassing_NAC_Solutions_Whitepaper.pdf
• http://www.osvdb.org/30977
• http://www.securityfocus.com/archive/1/446421/100/0/threaded

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