{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-12T04:43:17.803","vulnerabilities":[{"cve":{"id":"CVE-2021-1402","sourceIdentifier":"psirt@cisco.com","published":"2021-04-29T18:15:08.923","lastModified":"2024-11-21T05:44:16.410","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message through an affected device. SSL/TLS messages sent to an affected device do not trigger this vulnerability. A successful exploit could allow the attacker to cause a process to crash. This crash would then trigger a reload of the device. No manual intervention is needed to recover the device after the reload."},{"lang":"es","value":"Una vulnerabilidad en el controlador de mensajes SSL/TLS basado en software del software Cisco Firepower Threat Defense (FTD) podría permitir a un atacante remoto no autenticado activar una recarga de un dispositivo afectado, resultando en una condición de denegación de servicio (DoS).&#xa0;La vulnerabilidad es debido a una comprobación insuficiente de los mensajes SSL/TLS cuando el dispositivo lleva a cabo el descifrado SSL basado en software.&#xa0;Un atacante podría explotar esta vulnerabilidad mediante el envío de un mensaje SSL/TLS diseñado por medio de un dispositivo afectado.&#xa0;Los mensajes SSL/TLS enviados a un dispositivo afectado no desencadenan esta vulnerabilidad.&#xa0;Una explotación con éxito podría permitir al atacante causar el bloqueo de un proceso.&#xa0;Este bloqueo podría entonces desencadenar una recarga del dispositivo.&#xa0;No es necesaria una intervención manual para recuperar el dispositivo después de la recarga"}],"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-119"}]},{"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:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3.0","versionEndExcluding":"6.4.0","matchCriteriaId":"0B60D48C-19D8-4015-8D25-D3C0165C6080"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5.0","versionEndExcluding":"6.6.0","matchCriteriaId":"B5432C87-A9AF-4CC8-8573-443562963519"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_virtual:-:*:*:*:*:*:*:*","matchCriteriaId":"A38E373E-438F-44F6-AABF-2C57142507EE"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*","matchCriteriaId":"08F0F160-DAD2-48D4-B7B2-4818B2526F35"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:*","matchCriteriaId":"977D597B-F6DE-4438-AB02-06BE64D71EBE"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:*","matchCriteriaId":"EB71EB29-0115-4307-A9F7-262394FD9FB0"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:*","matchCriteriaId":"57179F60-E330-4FF0-9664-B1E4637FF210"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:*","matchCriteriaId":"5535C936-391B-4619-AA03-B35265FC15D7"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:firepower_1010:-:*:*:*:*:*:*:*","matchCriteriaId":"7FFE3880-4B85-4E23-9836-70875D5109F7"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:firepower_1120:-:*:*:*:*:*:*:*","matchCriteriaId":"727A02E8-40A1-4DFE-A3A2-91D628D3044F"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:firepower_1140:-:*:*:*:*:*:*:*","matchCriteriaId":"19F6546E-28F4-40DC-97D6-E0E023FE939B"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:firepower_1150:-:*:*:*:*:*:*:*","matchCriteriaId":"EB3B0EC3-4654-4D90-9D41-7EC2AD1DDF99"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:firepower_2110:-:*:*:*:*:*:*:*","matchCriteriaId":"52D96810-5F79-4A83-B8CA-D015790FCF72"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:firepower_2120:-:*:*:*:*:*:*:*","matchCriteriaId":"16FE2945-4975-4003-AE48-7E134E167A7F"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:firepower_2130:-:*:*:*:*:*:*:*","matchCriteriaId":"DCE7122A-5AA7-4ECD-B024-E27C9D0CFB7B"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:firepower_2140:-:*:*:*:*:*:*:*","matchCriteriaId":"976901BF-C52C-4F81-956A-711AF8A60140"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:isa_3000:-:*:*:*:*:*:*:*","matchCriteriaId":"9510E97A-FD78-43C6-85BC-223001ACA264"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-decrypt-dos-DdyLuK6c","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-decrypt-dos-DdyLuK6c","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}