{"id":"CVE-2009-2873","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-2873","generatedAt":"2026-10-27T18:40:17.633Z","title":"Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via malformed packets, aka Bug ID CSCsx70889.","description":"Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via malformed packets, aka Bug ID CSCsx70889.","published":"2009-09-28T19:30:02.000Z","lastModified":"2026-06-16T23:10:24.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"2.0","score":7.1,"severity":"HIGH","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C"},"cwe":[],"affected":["cisco/ios"],"epss":{"score":0.01684,"percentile":0.76823,"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 (1.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://osvdb.org/58334","source":"psirt@cisco.com"},{"url":"http://tools.cisco.com/security/center/viewAlert.x?alertId=18895","tags":["Patch","Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html","tags":["Patch","Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml","tags":["Patch","Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html","tags":["Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"http://www.securitytracker.com/id?1022930","source":"psirt@cisco.com"},{"url":"http://www.vupen.com/english/advisories/2009/2759","source":"psirt@cisco.com"},{"url":"http://osvdb.org/58334","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://tools.cisco.com/security/center/viewAlert.x?alertId=18895","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1022930","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2009/2759","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-2873","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."}