{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-02T04:15:09.197","vulnerabilities":[{"cve":{"id":"CVE-2021-1521","sourceIdentifier":"psirt@cisco.com","published":"2021-05-06T13:15:11.063","lastModified":"2024-11-21T05:44:32.287","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause an affected IP camera to reload. This vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected IP camera. A successful exploit could allow the attacker to cause the affected IP camera to reload unexpectedly, resulting in a denial of service (DoS) condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent)."},{"lang":"es","value":"Una vulnerabilidad en la implementación de Cisco Discovery para Cisco Video Surveillance 8000 Series IP Cameras, podría permitir a un atacante adyacente no autenticado causar la recarga de una cámara IP afectada. Esta vulnerabilidad es debido a la falta de comprobaciones al procesar mensajes Cisco Discovery Protocol. Un atacante podría explotar esta vulnerabilidad mediante el envío de un paquete de Cisco Discovery Protocol malicioso hacia una cámara IP afectada. Una explotación con éxito podría permitir al atacante hacer que la cámara IP afectada se recargue inesperadamente, resultando en una condición de denegación de servicio (DoS). Nota: El protocolo Cisco Discovery Protocol es un protocolo de Capa 2. Para explotar esta vulnerabilidad, un atacante debe estar en el mismo dominio de transmisión que el dispositivo afectado (capa 2 adyacente)"}],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:A/AC:L/Au:N/C:N/I:N/A:C","baseScore":6.1,"accessVector":"ADJACENT_NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"COMPLETE"},"baseSeverity":"MEDIUM","exploitabilityScore":6.5,"impactScore":6.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-119"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:video_surveillance_8400_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.9-11","matchCriteriaId":"607AF637-E7DF-4081-A794-840BA525E9D2"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:video_surveillance_8400:-:*:*:*:*:*:*:*","matchCriteriaId":"D53CC453-3532-443D-85C7-48888B4C1D65"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:video_surveillance_8000p_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.9-11","matchCriteriaId":"C47BF42C-39F6-4741-834F-676AB19836EB"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:video_surveillance_8000p:-:*:*:*:*:*:*:*","matchCriteriaId":"C942DFAC-3E07-42A6-8126-1A2E8D9C1B9D"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:video_surveillance_8020_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.9-11","matchCriteriaId":"63AEB8A0-BFF9-46B7-B454-8DB8453F555C"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:video_surveillance_8020:-:*:*:*:*:*:*:*","matchCriteriaId":"EED87A3F-9180-4441-9482-7BABBE9D89F0"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:video_surveillance_8030_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.9-11","matchCriteriaId":"4DADE470-E7D4-4D18-A4E1-04F412EC9823"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:video_surveillance_8030:-:*:*:*:*:*:*:*","matchCriteriaId":"545241D1-2C87-4490-B3B1-E446CEEC47BE"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:video_surveillance_8070_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.9-11","matchCriteriaId":"472B0B04-BB34-42DC-8550-8D05A008E99B"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:video_surveillance_8070:-:*:*:*:*:*:*:*","matchCriteriaId":"B90910E3-06CA-4012-AE91-354F800EDC4A"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:video_surveillance_8620_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.9-11","matchCriteriaId":"2A4DB01E-C8C7-401A-B770-F5E8A1DC9D2D"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:video_surveillance_8620:-:*:*:*:*:*:*:*","matchCriteriaId":"499A6E92-C012-4BE2-B6A3-F64441776ED8"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:video_surveillance_8630_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.9-11","matchCriteriaId":"1A65CACB-965D-4BA5-9558-2DD8D9572C29"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:video_surveillance_8630:-:*:*:*:*:*:*:*","matchCriteriaId":"203DE6A1-AB08-4FF8-B8AB-2157D3692FB5"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:video_surveillance_8930_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.9-11","matchCriteriaId":"B58B4F52-C105-45E9-839D-6DB0375F202B"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:video_surveillance_8930:-:*:*:*:*:*:*:*","matchCriteriaId":"E4CAF501-A194-44C4-95F8-1397BD879011"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipcameras-dos-fc3F6LzT","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipcameras-dos-fc3F6LzT","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}