{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-26T13:43:40.062","vulnerabilities":[{"cve":{"id":"CVE-2018-0447","sourceIdentifier":"psirt@cisco.com","published":"2018-10-05T14:29:02.810","lastModified":"2024-11-21T03:38:15.010","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the anti-spam protection mechanisms of Cisco AsyncOS Software for the Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass certain content filters on an affected device. The vulnerability is due to incomplete input and validation checking mechanisms for certain Sender Policy Framework (SPF) messages that are sent to an affected device. An attacker could exploit this vulnerability by sending a customized SPF packet to an affected device. If successful, an exploit could allow the attacker to bypass the URL filters that are configured for the affected device, which could allow malicious URLs to pass through the device."},{"lang":"es","value":"Una vulnerabilidad en los mecanismos de protección anti-spam de Cisco AsyncOS Software para Cisco Email Security Appliance (ESA) podría permitir que un atacante remoto no autenticado omita determinados filtros de contenido en un dispositivo afectado. Esta vulnerabilidad se debe a mecanismos de comprobación de validación y entradas incompletos para determinados mensajes SPF (Sender Policy Framework) que se envíen a un dispositivo afectado. Un atacante podría explotar esta vulnerabilidad enviando un paquete SPF personalizado a un dispositivo afectado. Si se realiza con éxito, su explotación podría permitir que el atacante omita los filtros URL que están configurados para el dispositivo afectado, lo que podría permitir que las URL maliciosas pasen a través del dispositivo."}],"metrics":{"cvssMetricV30":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:N","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"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-284"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-20"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:email_security_appliance:-:*:*:*:*:*:*:*","matchCriteriaId":"678C2C6F-6D46-4BBE-A902-7AD031D8EBA8"}]}]}],"references":[{"url":"http://www.securityfocus.com/bid/105300","source":"psirt@cisco.com","tags":["Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1041687","source":"psirt@cisco.com","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-esa-url-bypass","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/105300","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1041687","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-esa-url-bypass","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}