{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-16T12:18:04.347","vulnerabilities":[{"cve":{"id":"CVE-2020-3399","sourceIdentifier":"psirt@cisco.com","published":"2020-09-24T18:15:17.790","lastModified":"2024-11-21T05:30:57.277","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of an affected device. The vulnerability is due to insufficient input validation during CAPWAP packet processing. An attacker could exploit this vulnerability by sending a crafted CAPWAP packet to an affected device, resulting in a buffer over-read. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition on the affected device."},{"lang":"es","value":"Una vulnerabilidad en el procesamiento del protocolo Control and Provisioning of Wireless Access Points (CAPWAP) de Cisco IOS XE Software para Cisco Catalyst 9800 Series Wireless Controllers Series, podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS) de un dispositivo afectado. La vulnerabilidad es debido a una comprobación insuficiente de la entrada  durante el procesamiento de paquetes CAPWAP. Un atacante podría explotar esta vulnerabilidad mediante el envío de un paquete CAPWAP diseñado hacia un dispositivo afectado, resultando una lectura excesiva del búfer. Una explotación con éxito podría permitir al atacante causar que el dispositivo afectado se bloquear y se recargue, lo que resultaría en una condición de DoS en el dispositivo afectado."}],"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: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-126"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-125"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xe:16.12:*:*:*:*:*:*:*","matchCriteriaId":"4B868980-66AB-4321-85CC-5B492DDC1694"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:*","matchCriteriaId":"9027A528-2588-4C06-810B-5BB313FE4323"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xe:16.12.2:*:*:*:*:*:*:*","matchCriteriaId":"E5019B59-508E-40B0-9C92-2C26F58E2FBE"}]},{"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-capwap-dos-ShFzXf","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capwap-dos-ShFzXf","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}