{"api_version":"1","generated_at":"2026-07-23T22:53:34+00:00","cve":"CVE-2021-40407","urls":{"html":"https://cve.report/CVE-2021-40407","api":"https://cve.report/api/cve/CVE-2021-40407.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-40407","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-40407"},"summary":{"title":"CVE-2021-40407","description":"An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. 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Users should discontinue product utilization if a current mitigation is unavailable.","dueDate":"2025-01-08","knownRansomwareCampaignUse":"Unknown","notes":"https://reolink.com/product-eol/ ; https://reolink.com/download-center/ ; https://nvd.nist.gov/vuln/detail/CVE-2021-40407","cwes":"CWE-78","catalogVersion":"2026.07.23","updated_at":"2026-07-23 17:19:18"},"epss":{"cve_year":"2021","cve_id":"40407","cve":"CVE-2021-40407","epss":"0.479150000","percentile":"0.987320000","score_date":"2026-07-22","updated_at":"2026-07-23 00:09:32"},"legacy_qids":[{"cve":"CVE-2021-40407","qid":"591049","title":"Reolink RLC-410W device network settings OS command injection Multiple Vulnerabilities (TALOS-2021-1424)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-40407","ASSIGNER":"talos-cna@cisco.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424"}]},"description":{"description_data":[{"lang":"eng","value":"An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. An attacker can send an HTTP request to trigger this vulnerability."}]},"impact":{"cvss":{"baseScore":9.1,"baseSeverity":"Critical","vectorString":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.0"}}},"nvd":{"publishedDate":"2022-01-28 20:15:00","lastModifiedDate":"2022-07-29 15:25:00","problem_types":["CWE-78"],"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":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:reolink:rlc-410w_firmware:3.0.0.136_20121102:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:reolink:rlc-410w:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"40407","Ordinal":"216141","Title":"CVE-2021-40407","CVE":"CVE-2021-40407","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"40407","Ordinal":"1","NoteData":"An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. An attacker can send an HTTP request to trigger this vulnerability.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"40407","Ordinal":"2","NoteData":"2022-01-28","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"40407","Ordinal":"3","NoteData":"2022-01-28","Type":"Other","Title":"Modified"}]}}}