{"id":"CVE-2011-4019","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-4019","generatedAt":"2026-10-27T17:57:50.162Z","title":"Memory leak in Cisco IOS 12.4 and 15.0 through 15.2, and Cisco Unified Communications Manager (CUCM) 7.x, allows remote attackers to cause a denial of service (memory consumption) via a crafted response to a SIP SUBSCRIBE message, aka Bug IDs CSCto93837…","description":"Memory leak in Cisco IOS 12.4 and 15.0 through 15.2, and Cisco Unified Communications Manager (CUCM) 7.x, allows remote attackers to cause a denial of service (memory consumption) via a crafted response to a SIP SUBSCRIBE message, aka Bug IDs CSCto93837 and CSCtj61883.","published":"2012-05-03T10:11:40.000Z","lastModified":"2026-06-16T23:34:18.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"2.0","score":5.4,"severity":"MEDIUM","vector":"AV:N/AC:H/Au:N/C:N/I:N/A:C"},"cwe":["CWE-399"],"affected":["cisco/ios","cisco/unified communications manager"],"epss":{"score":0.01114,"percentile":0.65811,"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 (1.11%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151TCAVS.html","source":"psirt@cisco.com"},{"url":"http://www.cisco.com/web/software/282074295/90289/cucm-readme-715bsu5.pdf","source":"psirt@cisco.com"},{"url":"http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151TCAVS.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.cisco.com/web/software/282074295/90289/cucm-readme-715bsu5.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-4019","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."}