{"api_version":"1","generated_at":"2026-07-23T12:28:15+00:00","cve":"CVE-2020-4766","urls":{"html":"https://cve.report/CVE-2020-4766","api":"https://cve.report/api/cve/CVE-2020-4766.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-4766","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-4766"},"summary":{"title":"CVE-2020-4766","description":"IBM MQ Internet Pass-Thru 2.1 and 9.2 could allow a remote user to cause a denial of service by sending malformed MQ data requests which would consume all available resources. IBM X-Force ID: 188093.","state":"PUBLIC","assigner":"psirt@us.ibm.com","published_at":"2021-01-22 17:15:00","updated_at":"2021-01-28 14:57:00"},"problem_types":["CWE-400"],"metrics":[],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/188903","name":"ibm-websphere-cve20204766-dos (188903)","refsource":"XF","tags":["VDB Entry","Vendor Advisory"],"title":"IBM X-Force Exchange","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.ibm.com/support/pages/node/6406254","name":"https://www.ibm.com/support/pages/node/6406254","refsource":"CONFIRM","tags":["Patch","Vendor Advisory"],"title":"Security Bulletin: IBM MQ Internet Pass-Thru is vulnerable to a denial of service attack (CVE-2020-4766)","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-4766","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4766","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"4766","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ibm","cpe5":"mq_internet_pass-thru","cpe6":"2.1","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"4766","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ibm","cpe5":"mq_internet_pass-thru","cpe6":"9.2","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"4766","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ibm","cpe5":"mq_internet_pass-thru","cpe6":"2.1","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"4766","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ibm","cpe5":"mq_internet_pass-thru","cpe6":"9.2","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","references":{"reference_data":[{"title":"IBM Security Bulletin 6406254 (MQ Internet Pass-Thru)","refsource":"CONFIRM","name":"https://www.ibm.com/support/pages/node/6406254","url":"https://www.ibm.com/support/pages/node/6406254"},{"refsource":"XF","name":"ibm-websphere-cve20204766-dos (188903)","title":"X-Force Vulnerability Report","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/188903"}]},"CVE_data_meta":{"ID":"CVE-2020-4766","DATE_PUBLIC":"2021-01-21T00:00:00","STATE":"PUBLIC","ASSIGNER":"psirt@us.ibm.com"},"description":{"description_data":[{"lang":"eng","value":"IBM MQ Internet Pass-Thru 2.1 and 9.2 could allow a remote user to cause a denial of service by sending malformed MQ data requests which would consume all available resources. IBM X-Force ID: 188093."}]},"impact":{"cvssv3":{"TM":{"RC":"C","E":"U","RL":"O"},"BM":{"C":"N","PR":"N","SCORE":"5.900","AV":"N","S":"U","A":"H","UI":"N","I":"N","AC":"H"}}},"affects":{"vendor":{"vendor_data":[{"vendor_name":"IBM","product":{"product_data":[{"product_name":"MQ Internet Pass-Thru","version":{"version_data":[{"version_value":"2.1"},{"version_value":"9.2"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Denial of Service"}]}]},"data_format":"MITRE","data_version":"4.0"},"nvd":{"publishedDate":"2021-01-22 17:15:00","lastModifiedDate":"2021-01-28 14:57:00","problem_types":["CWE-400"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ibm:mq_internet_pass-thru:9.2:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ibm:mq_internet_pass-thru:2.1:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"4766","Ordinal":"164794","Title":"CVE-2020-4766","CVE":"CVE-2020-4766","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"4766","Ordinal":"1","NoteData":"IBM MQ Internet Pass-Thru 2.1 and 9.2 could allow a remote user to cause a denial of service by sending malformed MQ data requests which would consume all available resources. IBM X-Force ID: 188093.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"4766","Ordinal":"2","NoteData":"2021-01-22","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"4766","Ordinal":"3","NoteData":"2021-01-22","Type":"Other","Title":"Modified"}]}}}