{"id":"CVE-2026-19586","aliases":["EUVD-2026-63544","GHSA-32hp-8pjq-2c8g"],"status":"published","title":"Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways","description":"A pre-authentication OS command injection vulnerability has been identified in Omada gateways configured to operate as an OpenVPN Server due to insufficient validation of client-supplied data during OpenVPN connection establishment. An unauthenticated remote attacker may provide specially crafted input influencing backend command execution logic before authentication completes. Exploitation requires the OpenVPN Server feature to be enabled, VPN service reachable by the attacker and attacker to be able to initiate an OpenVPN connection attempt. \n\n\n\nSuccessful exploitation may allow arbitrary command execution, potentially\nleading to full compromise of the affected device.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.05772,"percentile":0.93151,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-78"],"published":"2026-08-20T18:32:06Z","modified":"2026-10-26T10:10:00Z","exploits":[{"source":"pocgithub","id":"mattgsys/CVE-2026-19586","title":"mattgsys/CVE-2026-19586","date":"2026-08-21","url":"https://github.com/mattgsys/CVE-2026-19586"},{"source":"pocgithub","id":"bgorzelic/omada-advisory-check","title":"bgorzelic/omada-advisory-check","date":"2026-11-06","url":"https://github.com/bgorzelic/omada-advisory-check"}],"products":[{"vendor":"merit lilin","product":"v1"},{"vendor":"tp-link","product":"dr3150_firmware"},{"vendor":"tp-link","product":"dr3220v-4g_firmware"},{"vendor":"tp-link","product":"dr3650v-4g_firmware"},{"vendor":"tp-link","product":"dr3650v_firmware"},{"vendor":"tp-link","product":"er603wp-4g-outdoor_firmware"},{"vendor":"tp-link","product":"er605_firmware"},{"vendor":"tp-link","product":"er605w_firmware"},{"vendor":"tp-link","product":"er701-5g-outdoor_firmware"},{"vendor":"tp-link","product":"er703wp-4g-outdoor_firmware"},{"vendor":"tp-link","product":"er706w-4g_firmware"},{"vendor":"tp-link","product":"er706w_firmware"},{"vendor":"tp-link","product":"er706wp-4g_firmware"},{"vendor":"tp-link","product":"er707-m2_firmware"},{"vendor":"tp-link","product":"er7206_firmware"},{"vendor":"tp-link","product":"er7212pc_firmware"},{"vendor":"tp-link","product":"er7406_firmware"},{"vendor":"tp-link","product":"er7412-m2_firmware"},{"vendor":"tp-link","product":"er8411_firmware"},{"vendor":"tp-link systems inc","product":"er7406 v1"},{"vendor":"tp-link systems inc","product":"er7412-m2 v1"},{"vendor":"tp-link systems inc.","product":"dr3150 v1"},{"vendor":"tp-link systems inc.","product":"dr3220v-4g v1"},{"vendor":"tp-link systems inc.","product":"dr3650v v1"},{"vendor":"tp-link systems inc.","product":"dr3650v-4g v1"},{"vendor":"tp-link systems inc.","product":"er603wp-4g-outdoor v1"},{"vendor":"tp-link systems inc.","product":"er605 v2"},{"vendor":"tp-link systems inc.","product":"er605w v2"},{"vendor":"tp-link systems inc.","product":"er701-5g-outdoor v1"},{"vendor":"tp-link systems inc.","product":"er703wp-4g-outdoor v1"},{"vendor":"tp-link systems inc.","product":"er706w v1"},{"vendor":"tp-link systems inc.","product":"er706w-4g v2"},{"vendor":"tp-link systems inc.","product":"er706wp-4g v1"},{"vendor":"tp-link systems inc.","product":"er707-m2 v1"},{"vendor":"tp-link systems inc.","product":"er7206 v2"},{"vendor":"tp-link systems inc.","product":"er7212pc v2"},{"vendor":"tp-link systems inc.","product":"er8411 v1"},{"vendor":"tp-link systems inc.","product":"v1"}],"references":[{"url":"https://www.omadanetworks.com/en/support/download/","tags":["patch","Product"]},{"url":"https://www.omadanetworks.com/us/support/download/","tags":["patch","Product"]},{"url":"https://www.tp-link.com/us/support/faq/5256/","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://mattg.systems/posts/cve-2026-19586/","tags":["third-party-advisory","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19586"},{"url":"https://www.omadanetworks.com/en/support/download"},{"url":"https://www.omadanetworks.com/us/support/download"},{"url":"https://www.tp-link.com/us/support/faq/5256"},{"url":"https://mattg.systems/posts/cve-2026-19586"},{"url":"https://github.com/advisories/GHSA-32hp-8pjq-2c8g"}],"sources":{"cve":[{"id":"CVE-2026-19586","title":"Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways","description":"A pre-authentication OS command injection vulnerability has been identified in Omada gateways configured to operate as an OpenVPN Server due to insufficient validation of client-supplied data during OpenVPN connection establishment. An unauthenticated remote attacker may provide specially crafted input influencing backend command execution logic before authentication completes. Exploitation requires the OpenVPN Server feature to be enabled, VPN service reachable by the attacker and attacker to be able to initiate an OpenVPN connection attempt. \n\n\n\nSuccessful exploitation may allow arbitrary command execution, potentially\nleading to full compromise of the affected device.","status":"published","published":"2026-08-20T18:32:06.942Z","modified":"2026-08-28T16:10:43.693Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"critical","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T13:47:17.512524Z"}],"euvd":[{"id":"EUVD-2026-63544","description":"A pre-authentication OS command injection vulnerability has been identified in Omada gateways configured to operate as an OpenVPN Server due to insufficient validation of client-supplied data during OpenVPN connection establishment. An unauthenticated remote attacker may provide specially crafted input influencing backend command execution logic before authentication completes. Exploitation requires the OpenVPN Server feature to be enabled, VPN service reachable by the attacker and attacker to be able to initiate an OpenVPN connection attempt. \n\n\n\nSuccessful exploitation may allow arbitrary command execution, potentially\nleading to full compromise of the affected device.","status":"published","published":"2026-08-20T18:32:06Z","modified":"2026-08-28T16:10:43Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"critical"}],"updated_at":"2026-11-02T18:01:23.104802Z"}],"ghsa":[{"id":"GHSA-32hp-8pjq-2c8g","title":"A pre-authentication OS command injection vulnerability has been identified in Omada gateways...","description":"A pre-authentication OS command injection vulnerability has been identified in Omada gateways configured to operate as an OpenVPN Server due to insufficient validation of client-supplied data during OpenVPN connection establishment. An unauthenticated remote attacker may provide specially crafted input influencing backend command execution logic before authentication completes. Exploitation requires the OpenVPN Server feature to be enabled, VPN service reachable by the attacker and attacker to be able to initiate an OpenVPN connection attempt. \n\n\n\nSuccessful exploitation may allow arbitrary command execution, potentially\nleading to full compromise of the affected device.","status":"published","published":"2026-08-20T21:31:27Z","modified":"2026-09-03T15:33:07Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:11:19.170234Z"}],"nvd":[{"id":"CVE-2026-19586","description":"A pre-authentication OS command injection vulnerability has been identified in Omada gateways configured to operate as an OpenVPN Server due to insufficient validation of client-supplied data during OpenVPN connection establishment. An unauthenticated remote attacker may provide specially crafted input influencing backend command execution logic before authentication completes. Exploitation requires the OpenVPN Server feature to be enabled, VPN service reachable by the attacker and attacker to be able to initiate an OpenVPN connection attempt. \n\n\n\nSuccessful exploitation may allow arbitrary command execution, potentially\nleading to full compromise of the affected device.","status":"published","published":"2026-08-20T19:16:51.103Z","modified":"2026-10-26T10:10:00.14Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:40.302911Z"}]}}