{"id":"CVE-2018-6402","aliases":["EUVD-2018-18159","GHSA-j5q8-22j2-m58f"],"status":"published","title":"Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi...","description":"Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify use of encryption such as WPA2, as long as the competing network has a stronger signal. An attacker must be able to set up a nearby SSID, similar to an \"Evil Twin\" attack.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00246,"percentile":0.1589,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-327"],"published":"2020-04-14T18:40:34Z","modified":"2026-06-17T02:01:48Z","products":[{"vendor":"ecobee","product":"ecobee4_firmware"}],"references":[{"url":"https://garrettmiller.github.io/meross-mss110-vuln/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-6402"},{"url":"https://github.com/advisories/GHSA-j5q8-22j2-m58f"}],"sources":{"cve":[{"id":"CVE-2018-6402","description":"Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify use of encryption such as WPA2, as long as the competing network has a stronger signal. An attacker must be able to set up a nearby SSID, similar to an \"Evil Twin\" attack.","status":"published","published":"2020-04-14T18:40:34Z","modified":"2024-08-05T06:01:49.165Z","updated_at":"2026-11-02T14:35:05.619113Z"}],"euvd":[{"id":"EUVD-2018-18159","description":"Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify use of encryption such as WPA2, as long as the competing network has a stronger signal. An attacker must be able to set up a nearby SSID, similar to an \"Evil Twin\" attack.","status":"published","published":"2020-04-14T18:40:34Z","modified":"2024-08-05T06:01:49Z","updated_at":"2026-11-03T02:40:08.072854Z"}],"ghsa":[{"id":"GHSA-j5q8-22j2-m58f","title":"Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi...","description":"Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify use of encryption such as WPA2, as long as the competing network has a stronger signal. An attacker must be able to set up a nearby SSID, similar to an \"Evil Twin\" attack.","status":"published","published":"2022-05-24T17:14:09Z","modified":"2023-01-29T05:02:13Z","updated_at":"2026-11-02T14:45:01.576953Z"}],"nvd":[{"id":"CVE-2018-6402","description":"Ecobee Ecobee4 4.2.0.171 devices can be forced to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify use of encryption such as WPA2, as long as the competing network has a stronger signal. An attacker must be able to set up a nearby SSID, similar to an \"Evil Twin\" attack.","status":"published","published":"2020-04-14T19:15:16.75Z","modified":"2026-06-17T02:01:48.3Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":2.9,"vector":"AV:A/AC:M/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:05:00.03074Z"}]}}