{"api_version":"1","generated_at":"2026-07-23T18:56:40+00:00","cve":"CVE-2016-7551","urls":{"html":"https://cve.report/CVE-2016-7551","api":"https://cve.report/api/cve/CVE-2016-7551.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2016-7551","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-7551"},"summary":{"title":"CVE-2016-7551","description":"chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).","state":"PUBLISHED","assigner":"mitre","published_at":"2017-04-17 16:59:00","updated_at":"2025-04-20 01:37:25"},"problem_types":["CWE-399","n/a"],"metrics":[{"version":"3.0","source":"nvd@nist.gov","type":"Primary","score":"7.5","severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"5","severity":"","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","data":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"}}],"references":[{"url":"http://www.debian.org/security/2016/dsa-3700","name":"http://www.debian.org/security/2016/dsa-3700","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third 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in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).","Type":"Description","Title":"CVE-2016-7551"},{"CveYear":"2016","CveId":"7551","Ordinal":"2","NoteData":"2017-04-17","Type":"Other","Title":"Published"},{"CveYear":"2016","CveId":"7551","Ordinal":"3","NoteData":"2017-04-17","Type":"Other","Title":"Modified"}]}}}