{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T03:31:50.254","vulnerabilities":[{"cve":{"id":"CVE-2020-3397","sourceIdentifier":"psirt@cisco.com","published":"2020-08-27T16:15:12.143","lastModified":"2024-11-21T05:30:57.000","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an affected device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of a specific type of BGP MVPN update message. An attacker could exploit this vulnerability by sending this specific, valid BGP MVPN update message to a targeted device. A successful exploit could allow the attacker to cause one of the BGP-related routing applications to restart multiple times, leading to a system-level restart. Note: The Cisco implementation of BGP accepts incoming BGP traffic from only explicitly configured peers. To exploit this vulnerability, an attacker must send a specific BGP MVPN update message over an established TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the trusted network of the affected system."},{"lang":"es","value":"Una vulnerabilidad en la implementación de Border Gateway Protocol (BGP) Multicast VPN (MVPN) de Cisco NX-OS Software, podría permitir a un atacante remoto no autenticado causar que un dispositivo afectado se recargue inesperadamente, resultando en una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una comprobación incompleta de entrada de un tipo específico de mensaje de actualización de BGP MVPN. Un atacante podría explotar esta vulnerabilidad mediante el envío de este mensaje de actualización de BGP MVPN específico y válido hacia un dispositivo objetivo. Una explotación con éxito podría permitir al atacante causar que una de las aplicaciones de enrutamiento relacionadas con BGP se reinicie varias veces, conllevando a un reinicio a nivel del sistema. Nota: La implementación de Cisco de BGP acepta tráfico BGP entrante solo de peers configurados explícitamente. Para explotar esta vulnerabilidad, un atacante debe enviar un mensaje de actualización de BGP MVPN específico por medio de una conexión TCP establecida que parece provenir de un peer BGP confiable. Para hacerlo, el atacante debe obtener información sobre los peers BGP en la red confiable del sistema afectado"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","baseScore":8.6,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":4.0}],"cvssMetricV30":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","baseScore":8.6,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":4.0}],"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":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-20"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-20"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*","matchCriteriaId":"DA35D4AA-24B3-428E-84ED-804EF941E9A9"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3016:-:*:*:*:*:*:*:*","matchCriteriaId":"528ED62B-D739-4E06-AC64-B506FD73BBAB"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3048:-:*:*:*:*:*:*:*","matchCriteriaId":"FC2A6C31-438A-4CF5-A3F3-364B1672EB7D"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3064:-:*:*:*:*:*:*:*","matchCriteriaId":"76C10D85-88AC-4A79-8866-BED88A0F8DF8"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3064-t:-:*:*:*:*:*:*:*","matchCriteriaId":"65CB7F6D-A82B-4A31-BFAC-FF4A4B8DF9C1"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_31108pc-v:-:*:*:*:*:*:*:*","matchCriteriaId":"4E930332-CDDD-48D5-93BC-C22D693BBFA2"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_31108tc-v:-:*:*:*:*:*:*:*","matchCriteriaId":"7BF4B8FE-E134-4491-B5C2-C1CFEB64731B"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_31128pq:-:*:*:*:*:*:*:*","matchCriteriaId":"F4226DA0-9371-401C-8247-E6E636A116C3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3132c-z:-:*:*:*:*:*:*:*","matchCriteriaId":"7664666F-BCE4-4799-AEEA-3A73E6AD33F4"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3132q:-:*:*:*:*:*:*:*","matchCriteriaId":"D3DBBFE9-835C-4411-8492-6006E74BAC65"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3132q-v:-:*:*:*:*:*:*:*","matchCriteriaId":"B3293438-3D18-45A2-B093-2C3F65783336"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3132q-xl:-:*:*:*:*:*:*:*","matchCriteriaId":"8F43B770-D96C-44EA-BC12-9F39FC4317B9"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3164q:-:*:*:*:*:*:*:*","matchCriteriaId":"FA782EB3-E8E6-4DCF-B39C-B3CBD46E4384"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3172:-:*:*:*:*:*:*:*","matchCriteriaId":"7817F4E6-B2DA-4F06-95A4-AF329F594C02"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3172pq-xl:-:*:*:*:*:*:*:*","matchCriteriaId":"7BB9DD73-E31D-4921-A6D6-E14E04703588"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3172tq:-:*:*:*:*:*:*:*","matchCriteriaId":"4532F513-0543-4960-9877-01F23CA7BA1B"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3172tq-32t:-:*:*:*:*:*:*:*","matchCriteriaId":"0B43502B-FD53-465A-B60F-6A359C6ACD99"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3172tq-xl:-:*:*:*:*:*:*:*","matchCriteriaId":"F3229124-B097-4AAC-8ACD-2F9C89DCC3AB"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3232c:-:*:*:*:*:*:*:*","matchCriteriaId":"652A2849-668D-4156-88FB-C19844A59F33"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3264c-e:-:*:*:*:*:*:*:*","matchCriteriaId":"24FBE87B-8A4F-43A8-98A3-4A7D9C630937"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3264q:-:*:*:*:*:*:*:*","matchCriteriaId":"6ACD09AC-8B28-4ACB-967B-AB3D450BC137"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3408-s:-:*:*:*:*:*:*:*","matchCriteriaId":"7D397349-CCC6-479B-9273-FB1FFF4F34F2"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_34180yc:-:*:*:*:*:*:*:*","matchCriteriaId":"DC7286A7-780F-4A45-940A-4AD5C9D0F201"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_3432d-s:-:*:*:*:*:*:*:*","matchCriteriaId":"5F7AF8D7-431B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