{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-23T21:30:22.671","vulnerabilities":[{"cve":{"id":"CVE-2020-3492","sourceIdentifier":"psirt@cisco.com","published":"2020-09-24T18:15:20.540","lastModified":"2024-11-21T05:31:10.867","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers and Cisco AireOS Software for Cisco Wireless LAN Controllers (WLC) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of certain parameters in a Flexible NetFlow Version 9 record. An attacker could exploit this vulnerability by spoofing the address of an existing Access Point on the network and sending a Control and Provisioning of Wireless Access Points (CAPWAP) packet that includes a crafted Flexible NetFlow Version 9 record to an affected device. A successful exploit could allow the attacker to cause a process crash that would lead to a reload of the device."},{"lang":"es","value":"Una vulnerabilidad en el procesador de paquetes Flexible NetFlow versión 9 de Cisco IOS XE Software para Cisco Catalyst 9800 Series Wireless Controllers y Cisco AireOS Software para Cisco Wireless LAN Controllers (WLC), podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS) en un dispositivo afectado. La vulnerabilidad es debido a una comprobación insuficiente de determinados parámetros en un registro Flexible NetFlow Versión 9. Un atacante podría explotar esta vulnerabilidad mediante la falsificación de la dirección de un Access Point  existente en la red y enviando un paquete Control and Provisioning of Wireless Access Points (CAPWAP) que incluye un registro Flexible NetFlow Versión 9 diseñado hacia un dispositivo afectado. Una explotación con éxito podría permitir al atacante causar un bloqueo del proceso que podría conllevar a una recarga del dispositivo."}],"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:L/Au:N/C:N/I:N/A:C","baseScore":7.8,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"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:ios_xe:16.12.1:*:*:*:*:*:*:*","matchCriteriaId":"C98DED36-D4B5-48D6-964E-EEEE97936700"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:catalyst_9800-40:-:*:*:*:*:*:*:*","matchCriteriaId":"1B9ED0E5-CB20-4106-9CF2-8EB587B33543"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:catalyst_9800-80:-:*:*:*:*:*:*:*","matchCriteriaId":"2B0E620C-8E09-4F7C-A326-26013173B993"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:catalyst_9800-cl:-:*:*:*:*:*:*:*","matchCriteriaId":"FF93F1C8-669F-4ECB-8D81-ECDA7B550175"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:catalyst_9800-l:-:*:*:*:*:*:*:*","matchCriteriaId":"2E0BA345-B7D7-4975-9199-4DC7875BBFD0"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:catalyst_9800-l-c:-:*:*:*:*:*:*:*","matchCriteriaId":"4E9EA95F-4E39-4D9C-8A84-D1F6014A4A40"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:catalyst_9800-l-f:-:*:*:*:*:*:*:*","matchCriteriaId":"EA0BC769-C244-41BD-BE80-E67F4E1CDDA4"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-wlc-fnfv9-EvrAQpNX","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-wlc-fnfv9-EvrAQpNX","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}