{"id":"CVE-2011-2578","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-2578","generatedAt":"2026-10-27T18:47:02.589Z","title":"Memory leak in Cisco IOS 15.1 and 15.2 allows remote attackers to cause a denial of service (memory consumption) via malformed SIP packets on a NAT interface, aka Bug ID CSCts12366.","description":"Memory leak in Cisco IOS 15.1 and 15.2 allows remote attackers to cause a denial of service (memory consumption) via malformed SIP packets on a NAT interface, aka Bug ID CSCts12366.","published":"2012-05-02T10:09:21.000Z","lastModified":"2026-06-16T23:31:36.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"2.0","score":7.8,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C"},"cwe":["CWE-399"],"affected":["cisco/ios"],"epss":{"score":0.0269,"percentile":0.85777,"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 (2.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151-4MCAVS.html","tags":["Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"http://www.securitytracker.com/id?1027005","source":"psirt@cisco.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/75338","source":"psirt@cisco.com"},{"url":"http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151-4MCAVS.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1027005","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/75338","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-2578","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."}