{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T04:57:07.865","vulnerabilities":[{"cve":{"id":"CVE-2021-1586","sourceIdentifier":"psirt@cisco.com","published":"2021-08-25T20:15:11.237","lastModified":"2024-11-21T05:44:40.963","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the Multi-Pod or Multi-Site network configurations for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, remote attacker to unexpectedly restart the device, resulting in a denial of service (DoS) condition. This vulnerability exists because TCP traffic sent to a specific port on an affected device is not properly sanitized. An attacker could exploit this vulnerability by sending crafted TCP data to a specific port that is listening on a public-facing IP address for the Multi-Pod or Multi-Site configuration. A successful exploit could allow the attacker to cause the device to restart unexpectedly, resulting in a DoS condition."},{"lang":"es","value":"Una vulnerabilidad en las configuraciones de red Multi-Pod o Multi-Site para Cisco Nexus 9000 Series Fabric Switches en el modo Application Centric Infrastructure (ACI) podría permitir a un atacante remoto no autenticado reiniciar inesperadamente el dispositivo, resultando en una condición de denegación de servicio (DoS). Esta vulnerabilidad se presenta porque el tráfico TCP enviado a un puerto específico en un dispositivo afectado no se sanea apropiadamente. Un atacante podría explotar esta vulnerabilidad mediante el envío de datos TCP diseñados a un puerto específico que está escuchando en una dirección IP pública para la configuración de Multi-Pod o Multi-Site. Una explotación con éxito podría permitir al atacante causar que el dispositivo se reinicie inesperadamente, resultando en una condición de DoS."}],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Secondary","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},{"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}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-345"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-345"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:nx-os:15.0\\(2e\\):*:*:*:*:*:*:*","matchCriteriaId":"11E2E40A-CCD5-4CA7-826E-10923BED72E8"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:nx-os:15.1\\(1h\\):*:*:*:*:*:*:*","matchCriteriaId":"C78C9E79-C6DC-4FE3-8B79-A9BEBED9A67D"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9000v:-:*:*:*:*:*:*:*","matchCriteriaId":"0CD9C1F1-8582-4F67-A77D-97CBFECB88B8"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_92160yc-x:-:*:*:*:*:*:*:*","matchCriteriaId":"4283E433-7F8C-4410-B565-471415445811"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_92300yc:-:*:*:*:*:*:*:*","matchCriteriaId":"F80AB6FB-32FD-43D7-A9F1-80FA47696210"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_92304qc:-:*:*:*:*:*:*:*","matchCriteriaId":"D5B2E4C1-2627-4B9D-8E92-4B483F647651"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_92348gc-x:-:*:*:*:*:*:*:*","matchCriteriaId":"557ED31C-C26A-4FAE-8B14-D06B49F7F08B"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9236c:-:*:*:*:*:*:*:*","matchCriteriaId":"11411BFD-3F4D-4309-AB35-A3629A360FB0"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9272q:-:*:*:*:*:*:*:*","matchCriteriaId":"E663DE91-C86D-48DC-B771-FA72A8DF7A7C"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93108tc-ex:-:*:*:*:*:*:*:*","matchCriteriaId":"A90184B3-C82F-4CE5-B2AD-97D5E4690871"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93108tc-ex-24:-:*:*:*:*:*:*:*","matchCriteriaId":"40E40F42-632A-47DF-BE33-DC25B826310B"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93108tc-fx:-:*:*:*:*:*:*:*","matchCriteriaId":"4AB89849-6DA4-4C9D-BC3F-EE0E41FD1901"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:*:*:*:*:*:*:*","matchCriteriaId":"C47F6BF9-2ADB-41A4-8D7D-8BB00141BB23"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93108tc-fx3p:-:*:*:*:*:*:*:*","matchCriteriaId":"BBEF7F26-BB47-44BD-872E-130820557C23"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:*","matchCriteriaId":"07DE6F63-2C7D-415B-8C34-01EC05C062F3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:*","matchCriteriaId":"F423E45D-A6DD-4305-9C6A-EAB26293E53A"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9316d-gx:-:*:*:*:*:*:*:*","matchCriteriaId":"102F91CD-DFB6-43D4-AE5B-DA157A696230"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93180lc-ex:-:*:*:*:*:*:*:*","matchCriteriaId":"E952A96A-0F48-4357-B7DD-1127D8827650"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93180yc-ex:-:*:*:*:*:*:*:*","matchCriteriaId":"F70D81F1-8B12-4474-9060-B4934D8A3873"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93180yc-ex-24:-:*:*:*:*:*:*:*","matchCriteriaId":"5394DE31-3863-4CA9-B7B1-E5227183100D"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93180yc-fx:-:*:*:*:*:*:*:*","matchCriteriaId":"7349D69B-D8FA-4462-AA28-69DD18A652D9"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93180yc-fx-24:-:*:*:*:*:*:*:*","matchCriteriaId":"FE4BB834-2C00-4384-A78E-AF3BCDDC58AF"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93180yc-fx3:-:*:*:*:*:*:*:*","matchCriteriaId":"B0D30D52-837F-4FDA-B8E5-A9066E9C6D2F"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93180yc-fx3s:-:*:*:*:*:*:*:*","matchCriteriaId":"7CE49B45-F2E9-491D-9C29-1B46E9CE14E2"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93216tc-fx2:-:*:*:*:*:*:*:*","matchCriteriaId":"B1CC5F78-E88B-4B82-9E3E-C73D3A49DE26"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93240yc-fx2:-:*:*:*:*:*:*:*","matchCriteriaId":"91231DC6-2773-4238-8C14-A346F213B5E5"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9332c:-:*:*:*:*:*:*:*","matchCriteriaId":"2DF88547-BAF4-47B0-9F60-80A30297FCEB"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9332pq:-:*:*:*:*:*:*:*","matchCriteriaId":"113772B6-E9D2-4094-9468-3F4E1A87D07D"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93360yc-fx2:-:*:*:*:*:*:*:*","matchCriteriaId":"C45A38D6-BED6-4FEF-AD87-A1E813695DE0"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9336c-fx2:-:*:*:*:*:*:*:*","matchCriteriaId":"F1FC2B1F-232E-4754-8076-CC82F3648730"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9336c-fx2-e:-:*:*:*:*:*:*:*","matchCriteriaId":"7CDD27C9-5EAF-4956-8AB7-740C84C9D4FC"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9348gc-fxp:-:*:*:*:*:*:*:*","matchCriteriaId":"17C7E3DB-8E1A-47AD-B1C5-61747DC0CFB9"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_93600cd-gx:-:*:*:*:*:*:*:*","matchCriteriaId":"2CF467E2-4567-426E-8F48-39669E0F514C"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9364c:-:*:*:*:*:*:*:*","matchCriteriaId":"63842B25-8C32-4988-BBBD-61E9CB09B4F3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9364c-gx:-:*:*:*:*:*:*:*","matchCriteriaId":"68EA1FEF-B6B6-49FE-A0A4-5387F76303F8"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9372px:-:*:*:*:*:*:*:*","matchCriteriaId":"4364ADB9-8162-451D-806A-B98924E6B2CF"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9372px-e:-:*:*:*:*:*:*:*","matchCriteriaId":"B53BCB42-ED61-4FCF-8068-CB467631C63C"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:*","matchCriteriaId":"49E0371B-FDE2-473C-AA59-47E1269D050F"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9372tx-e:-:*:*:*:*:*:*:*","matchCriteriaId":"489D11EC-5A18-4F32-BC7C-AC1FCEC27222"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9396px:-:*:*:*:*:*:*:*","matchCriteriaId":"1BC5293E-F2B4-46DC-85DA-167EA323FCFD"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9396tx:-:*:*:*:*:*:*:*","matchCriteriaId":"EA022E77-6557-4A33-9A3A-D028E2DB669A"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:*","matchCriteriaId":"DDC2F709-AFBE-48EA-A3A2-DA1134534FB6"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n9kaci-tcp-dos-YXukt6gM","source":"psirt@cisco.com","tags":["Patch","Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n9kaci-tcp-dos-YXukt6gM","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]}]}}]}