{"id":"CVE-2005-1802","url":"https://www.cyber-defence.io/tools/cve/CVE-2005-1802","generatedAt":"2026-10-27T17:30:23.433Z","title":"Nortel VPN Router (aka Contivity) allows remote attackers to cause a denial of service (crash) via an IPsec IKE packet with a malformed ISAKMP header.","description":"Nortel VPN Router (aka Contivity) allows remote attackers to cause a denial of service (crash) via an IPsec IKE packet with a malformed ISAKMP header.","published":"2005-05-27T04:00:00.000Z","lastModified":"2026-06-16T22:13:43.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":[],"affected":["nortel/contivity","nortel/vpn router 1010","nortel/vpn router 1050","nortel/vpn router 1100","nortel/vpn router 1700","nortel/vpn router 1740","nortel/vpn router 2700","nortel/vpn router 5000","nortel/vpn router 600"],"epss":{"score":0.01591,"percentile":0.75496,"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":"low","text":"Lower severity and a low EPSS score (1.59%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://securitytracker.com/id?1014068","source":"cve@mitre.org"},{"url":"http://www.nta-monitor.com/news/vpn-flaws/nortel/vpn-router-dos/","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/399423","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/13792","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://securitytracker.com/id?1014068","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.nta-monitor.com/news/vpn-flaws/nortel/vpn-router-dos/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/399423","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/13792","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2005-1802","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."}