{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-17T15:52:20.883","vulnerabilities":[{"cve":{"id":"CVE-2021-21967","sourceIdentifier":"talos-cna@cisco.com","published":"2022-04-14T20:15:08.650","lastModified":"2024-11-21T05:49:20.253","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"An out-of-bounds write vulnerability exists in the OTA update task functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted MQTT payload can lead to denial of service. An attacker can perform a man-in-the-middle attack to trigger this vulnerability."},{"lang":"es","value":"Se presenta una vulnerabilidad de escritura fuera de límites en la funcionalidad OTA update task de Sealevel Systems, Inc. SeaConnect 370W versión v1.3.34. Una carga útil MQTT especialmente diseñada puede conllevar a una denegación de servicio. Un atacante puede llevar a cabo un ataque de tipo man-in-the-middle para desencadenar esta vulnerabilidad"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":5.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":3.6}],"cvssMetricV30":[{"source":"talos-cna@cisco.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":4.2}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:N/A:C","baseScore":7.1,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":8.6,"impactScore":6.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"talos-cna@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-120"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-120"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:*:*:*:*:*:*:*","matchCriteriaId":"06014E46-DFB2-45C7-99FD-972EBCCC5FD3"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:sealevel:seaconnect_370w:-:*:*:*:*:*:*:*","matchCriteriaId":"D8CC996D-F36A-4B26-BD50-68F88D24D001"}]}]}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1394","source":"talos-cna@cisco.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1394","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]}]}}]}