{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-17T07:26:37.754","vulnerabilities":[{"cve":{"id":"CVE-2026-20039","sourceIdentifier":"psirt@cisco.com","published":"2026-03-04T18:16:17.140","lastModified":"2026-04-16T20:01:23.710","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to ineffective memory management of the VPN web server. An attacker could exploit this vulnerability by sending a large number of crafted HTTP requests to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition."},{"lang":"es","value":"Una vulnerabilidad en el servidor web VPN de Cisco Secure Firewall Adaptive Security Appliance (ASA) Software y Cisco Secure Firewall Threat Defense (FTD) Software podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS) en un dispositivo afectado.\n\nEsta vulnerabilidad se debe a una gestión de memoria ineficaz del servidor web VPN. Un atacante podría explotar esta vulnerabilidad enviando un gran número de solicitudes HTTP manipuladas a un dispositivo afectado. Un exploit exitoso podría permitir al atacante provocar que el dispositivo se reinicie, lo que resultaría en una condición de DoS."}],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","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}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Primary","description":[{"lang":"en","value":"CWE-244"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.12.1","versionEndExcluding":"9.16.4.84","matchCriteriaId":"4C2D2830-36F0-40F4-83C0-226BFE31AB66"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.17.1","versionEndExcluding":"9.18.4.57","matchCriteriaId":"36EF7E1F-54E6-4CED-B01C-B40B625528E1"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.19.1","versionEndExcluding":"9.20.3.16","matchCriteriaId":"4CDAAEF6-234F-48D4-84B6-B6D08DEE12E7"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.22.1.1","versionEndExcluding":"9.22.2.4","matchCriteriaId":"55B05CD4-4849-471F-ACC5-0E0478568A2D"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*","versionStartIncluding":"9.23.1","versionEndExcluding":"9.23.1.3","matchCriteriaId":"44DD9349-BE3E-40BD-A6F0-2775F76DCF3E"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.0","versionEndExcluding":"7.0.9","matchCriteriaId":"A02019B1-284B-4118-A544-9AA56216E741"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1.0","versionEndExcluding":"7.2.10","matchCriteriaId":"EA932D4F-672D-4294-B84C-0762E645AD7F"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"7.3.0","versionEndExcluding":"7.4.3","matchCriteriaId":"737DB8CE-EC0B-4221-A8BF-3E64702DE092"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"7.6.0","versionEndExcluding":"7.6.1","matchCriteriaId":"3B06365E-2521-4F42-9FD9-35F954833384"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*","versionStartIncluding":"7.7.0","versionEndExcluding":"7.7.10","matchCriteriaId":"5432354F-ECF5-4796-9E28-C7AE51405D09"}]}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-vpn-dos-SpOFF2Re","source":"psirt@cisco.com","tags":["Vendor Advisory"]}]}}]}