{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-11T07:50:50.015","vulnerabilities":[{"cve":{"id":"CVE-2021-1256","sourceIdentifier":"psirt@cisco.com","published":"2021-04-29T18:15:08.840","lastModified":"2024-11-21T05:43:56.447","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite files on the file system of an affected device by using directory traversal techniques. A successful exploit could cause system instability if important system files are overwritten. This vulnerability is due to insufficient validation of user input for the file path in a specific CLI command. An attacker could exploit this vulnerability by logging in to a targeted device and issuing a specific CLI command with crafted user input. A successful exploit could allow the attacker to overwrite arbitrary files on the file system of the affected device. The attacker would need valid user credentials on the device."},{"lang":"es","value":"Una vulnerabilidad en la CLI del software Cisco Firepower Threat Defense (FTD), podría permitir a un atacante autenticado local sobrescribir archivos en el sistema de archivos de un dispositivo afectado mediante el uso de técnicas de salto de directorios. Una explotación con éxito podría causar inestabilidad en el sistema si archivos importantes del sistema son sobrescritos. Esta vulnerabilidad es debido a una comprobación insuficiente de entrada del usuario para la ruta del archivo en un comando CLI específico. Un atacante podría explotar esta vulnerabilidad al iniciar sesión en un dispositivo de destino y emitir un comando CLI específico con la entrada del usuario. Una explotación con éxito podría permitir al atacante sobrescribir archivos arbitrarios en el sistema de archivos del dispositivo afectado. El atacante necesitaría credenciales de usuario válidas en el dispositivo"}],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","baseScore":6.0,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":0.8,"impactScore":5.2},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","baseScore":6.0,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":0.8,"impactScore":5.2}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:N/I:P/A:P","baseScore":3.6,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"LOW","exploitabilityScore":3.9,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-552"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-22"},{"lang":"en","value":"CWE-552"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*","versionEndIncluding":"6.4.0","matchCriteriaId":"3C8BBB3D-8E5E-4285-AA16-DCA436119F4D"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.0","versionEndExcluding":"6.6.4","matchCriteriaId":"F6642EEB-0BE6-4607-9B1E-96F2F715710F"}]}]}],"references":[{"url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10382","source":"psirt@cisco.com","tags":["Not Applicable","Third Party Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-overwrite-XknRjGdB","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10382","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Not Applicable","Third Party Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-overwrite-XknRjGdB","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}