{"api_version":"1","generated_at":"2026-07-23T19:55:58+00:00","cve":"CVE-2016-6391","urls":{"html":"https://cve.report/CVE-2016-6391","api":"https://cve.report/api/cve/CVE-2016-6391.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2016-6391","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-6391"},"summary":{"title":"CVE-2016-6391","description":"Cisco IOS 12.2 and 15.0 through 15.3 allows remote attackers to cause a denial of service (traffic-processing outage) via a crafted series of Common Industrial Protocol (CIP) requests, aka Bug ID CSCur69036.","state":"PUBLISHED","assigner":"cisco","published_at":"2016-10-05 20:59:06","updated_at":"2026-05-06 22:30:45"},"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":"7.8","severity":"","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","data":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:C","baseScore":7.8,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"COMPLETE"}}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-cip","name":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-cip","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor 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IOS 12.2 and 15.0 through 15.3 allows remote attackers to cause a denial of service (traffic-processing outage) via a crafted series of Common Industrial Protocol (CIP) requests, aka Bug ID CSCur69036.","Type":"Description","Title":"CVE-2016-6391"},{"CveYear":"2016","CveId":"6391","Ordinal":"2","NoteData":"2016-10-05","Type":"Other","Title":"Published"},{"CveYear":"2016","CveId":"6391","Ordinal":"3","NoteData":"2017-07-29","Type":"Other","Title":"Modified"}]}}}