{"id":"CVE-2006-4983","url":"https://www.cyber-defence.io/tools/cve/CVE-2006-4983","generatedAt":"2026-10-27T19:39:01.785Z","title":"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.","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.","published":"2006-09-26T02:07:00.000Z","lastModified":"2026-06-16T22:30:15.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["cisco/network access control"],"epss":{"score":0.01365,"percentile":0.71623,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.insightix.com/files/pdf/Bypassing_NAC_Solutions_Whitepaper.pdf","source":"cve@mitre.org"},{"url":"http://www.osvdb.org/30977","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/446421/100/0/threaded","source":"cve@mitre.org"},{"url":"http://www.insightix.com/files/pdf/Bypassing_NAC_Solutions_Whitepaper.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.osvdb.org/30977","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/446421/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2006-4983","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}