{"id":"CVE-2024-20496","aliases":["EUVD-2024-18211","GHSA-3phf-8x93-jmv2"],"status":"published","title":"Cisco SD-WAN vEdge Routers Denial of Service Vulnerability","description":"A vulnerability in the UDP packet validation code of Cisco SD-WAN vEdge Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system.\r\n\r\nThis vulnerability is due to incorrect handling of a specific type of malformed UDP packet. An attacker in a machine-in-the-middle position could exploit this vulnerability by sending crafted UDP packets to an affected device. A successful exploit could allow the attacker to cause the device to reboot, resulting in a DoS condition on the affected system.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00225,"percentile":0.13345,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2024-09-25T16:20:12Z","modified":"2026-06-17T07:07:24Z","products":[{"vendor":"cisco","product":"cisco sd-wan vedge cloud"},{"vendor":"cisco","product":"cisco sd-wan vedge router"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-vedos-KqFfhps3"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-20496"},{"url":"https://github.com/advisories/GHSA-3phf-8x93-jmv2"}],"sources":{"cve":[{"id":"CVE-2024-20496","title":"Cisco SD-WAN vEdge Routers Denial of Service Vulnerability","description":"A vulnerability in the UDP packet validation code of Cisco SD-WAN vEdge Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system.\r\n\r\nThis vulnerability is due to incorrect handling of a specific type of malformed UDP packet. An attacker in a machine-in-the-middle position could exploit this vulnerability by sending crafted UDP packets to an affected device. A successful exploit could allow the attacker to cause the device to reboot, resulting in a DoS condition on the affected system.","status":"published","published":"2024-09-25T16:20:12.079Z","modified":"2024-09-25T18:36:07.489Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:33:56.868512Z"}],"euvd":[{"id":"EUVD-2024-18211","description":"A vulnerability in the UDP packet validation code of Cisco SD-WAN vEdge Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system.\r\n\r\nThis vulnerability is due to incorrect handling of a specific type of malformed UDP packet. An attacker in a machine-in-the-middle position could exploit this vulnerability by sending crafted UDP packets to an affected device. A successful exploit could allow the attacker to cause the device to reboot, resulting in a DoS condition on the affected system.","status":"published","published":"2024-09-25T16:20:12Z","modified":"2024-09-25T18:36:07Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:28:12.011224Z"}],"ghsa":[{"id":"GHSA-3phf-8x93-jmv2","title":"A vulnerability in the UDP packet validation code of Cisco SD-WAN vEdge Software could allow an...","description":"A vulnerability in the UDP packet validation code of Cisco SD-WAN vEdge Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system.\n\nThis vulnerability is due to incorrect handling of a specific type of malformed UDP packet. An attacker in a machine-in-the-middle position could exploit this vulnerability by sending crafted UDP packets to an affected device. A successful exploit could allow the attacker to cause the device to reboot, resulting in a DoS condition on the affected system.","status":"published","published":"2024-09-25T18:31:21Z","modified":"2024-09-25T18:31:27Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:58:20.799511Z"}],"nvd":[{"id":"CVE-2024-20496","description":"A vulnerability in the UDP packet validation code of Cisco SD-WAN vEdge Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system.\r\n\r\nThis vulnerability is due to incorrect handling of a specific type of malformed UDP packet. An attacker in a machine-in-the-middle position could exploit this vulnerability by sending crafted UDP packets to an affected device. A successful exploit could allow the attacker to cause the device to reboot, resulting in a DoS condition on the affected system.","status":"published","published":"2024-09-25T17:15:18.02Z","modified":"2026-06-17T07:07:24.07Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:10:29.044588Z"}]}}