{"api_version":"1","generated_at":"2026-07-23T20:59:02+00:00","cve":"CVE-2021-3625","urls":{"html":"https://cve.report/CVE-2021-3625","api":"https://cve.report/api/cve/CVE-2021-3625.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-3625","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3625"},"summary":{"title":"CVE-2021-3625","description":"Buffer overflow in Zephyr USB DFU DNLOAD. Zephyr versions >= v2.5.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363","state":"PUBLIC","assigner":"vulnerabilities@zephyrproject.org","published_at":"2021-10-05 21:15:00","updated_at":"2021-10-13 19:53:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363","name":"http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363","refsource":"MISC","tags":[],"title":"Buffer overflow in Zephyr USB DFU DNLOAD · Advisory · zephyrproject-rtos/zephyr · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-3625","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3625","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"3625","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"zephyrproject","cpe5":"zephyr","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-3625","ASSIGNER":"vulnerabilities@zephyrproject.org","DATE_PUBLIC":"2021-09-21T00:00:00.000Z","STATE":"PUBLIC","TITLE":"Buffer overflow in Zephyr USB DFU DNLOAD"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"zephyrproject-rtos","product":{"product_data":[{"product_name":"zephyr","version":{"version_data":[{"version_affected":">=","version_value":"v2.5.0"}]}}]}}]}},"description":{"description_data":[{"lang":"eng","value":"Buffer overflow in Zephyr USB DFU DNLOAD. Zephyr versions >= v2.5.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363"}]},"impact":{"cvss":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.6,"environmentalScore":9.6,"temporalScore":9.6,"baseSeverity":"CRITICAL"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Heap-based Buffer Overflow (CWE-122)"}]}]},"references":{"reference_data":[{"url":"http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363","refsource":"MISC","name":"http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363"}]},"source":{"defect":["https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363"]}},"nvd":{"publishedDate":"2021-10-05 21:15:00","lastModifiedDate":"2021-10-13 19:53:00","problem_types":["CWE-787"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"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:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*","versionStartIncluding":"2.5.0","versionEndExcluding":"2.7.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"3625","Ordinal":"211039","Title":"CVE-2021-3625","CVE":"CVE-2021-3625","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"3625","Ordinal":"1","NoteData":"Buffer overflow in Zephyr USB DFU DNLOAD. Zephyr versions >= v2.5.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363","Type":"Description","Title":null},{"CveYear":"2021","CveId":"3625","Ordinal":"2","NoteData":"2021-10-05","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"3625","Ordinal":"3","NoteData":"2021-10-05","Type":"Other","Title":"Modified"}]}}}