{"api_version":"1","generated_at":"2026-07-03T06:27:34+00:00","cve":"CVE-2024-30166","urls":{"html":"https://cve.report/CVE-2024-30166","api":"https://cve.report/api/cve/CVE-2024-30166.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2024-30166","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-30166"},"summary":{"title":"CVE-2024-30166","description":"In Mbed TLS 3.3.0 through 3.5.2 before 3.6.0, a malicious client can cause information disclosure or a denial of service because of a stack buffer over-read (of less than 256 bytes) in a TLS 1.3 server via a TLS 3.1 ClientHello.","state":"PUBLISHED","assigner":"mitre","published_at":"2024-04-03 03:15:10","updated_at":"2026-06-05 19:38:32"},"problem_types":["CWE-121","n/a","CWE-121 CWE-121 Stack-based Buffer Overflow"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","score":"9.1","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","score":"9.1","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/","name":"https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"title":"","mime":"","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0","name":"https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes"],"title":"","mime":"","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-30166","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-30166","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]},{"source":"ADP","vendor":"arm","product":"mbed_tls","version":"affected 3.3.0 3.6.0 custom","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2024","cve_id":"30166","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"trustedfirmware","cpe5":"mbed_tls","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2024","cve_id":"30166","cve":"CVE-2024-30166","epss":"0.003480000","percentile":"0.577260000","score_date":"2026-06-11","updated_at":"2026-06-12 00:07:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"affected":[{"cpes":["cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*"],"defaultStatus":"unknown","product":"mbed_tls","vendor":"arm","versions":[{"lessThan":"3.6.0","status":"affected","version":"3.3.0","versionType":"custom"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2024-30166","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-08-01T14:09:37.825391Z","version":"2.0.3"},"type":"ssvc"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"CWE-121 Stack-based Buffer Overflow","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2024-08-01T14:13:35.202Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"},{"providerMetadata":{"dateUpdated":"2024-08-02T01:25:03.067Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_transferred"],"url":"https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/"},{"tags":["x_transferred"],"url":"https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","value":"In Mbed TLS 3.3.0 through 3.5.2 before 3.6.0, a malicious client can cause information disclosure or a denial of service because of a stack buffer over-read (of less than 256 bytes) in a TLS 1.3 server via a TLS 3.1 ClientHello."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2024-04-03T02:22:27.285Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"url":"https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/"},{"url":"https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0"}]}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2024-30166","datePublished":"2024-04-03T00:00:00.000Z","dateReserved":"2024-03-24T00:00:00.000Z","dateUpdated":"2024-08-02T01:25:03.067Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2024-04-03 03:15:10","lastModifiedDate":"2026-06-05 19:38:32","problem_types":["CWE-121","n/a","CWE-121 CWE-121 Stack-based Buffer Overflow"],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.2}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3.0","versionEndExcluding":"3.6.0","matchCriteriaId":"8BF2A7FE-B09C-4B6D-A6F8-DE2F17DE89F7"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2024","CveId":"30166","Ordinal":"1","Title":"CVE-2024-30166","CVE":"CVE-2024-30166","Year":"2024"},"notes":[{"CveYear":"2024","CveId":"30166","Ordinal":"1","NoteData":"In Mbed TLS 3.3.0 through 3.5.2 before 3.6.0, a malicious client can cause information disclosure or a denial of service because of a stack buffer over-read (of less than 256 bytes) in a TLS 1.3 server via a TLS 3.1 ClientHello.","Type":"Description","Title":"CVE-2024-30166"}]}}}