{"id":"CVE-2019-18989","aliases":["EUVD-2019-8643","GHSA-4p7h-q24r-h439"],"status":"published","title":"A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The...","description":"A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.","severity":{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AC:L/AV:A/A:N/C:L/I:L/PR:N/S:C/UI:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00751,"percentile":0.55257,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-290"],"published":"2020-09-30T17:22:54Z","modified":"2026-06-17T02:25:43Z","products":[{"vendor":"mediatek","product":"mt7620n_firmware"}],"references":[{"url":"https://www.synopsys.com/blogs/software-security/cyrc-advisory-sept2020/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-18989"},{"url":"https://github.com/advisories/GHSA-4p7h-q24r-h439"}],"sources":{"cve":[{"id":"CVE-2019-18989","description":"A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.","status":"published","published":"2020-09-30T17:22:54Z","modified":"2024-08-05T02:02:39.892Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AC:L/AV:A/A:N/C:L/I:L/PR:N/S:C/UI:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:32:23.803059Z"}],"euvd":[{"id":"EUVD-2019-8643","description":"A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.","status":"published","published":"2020-09-30T17:22:54Z","modified":"2024-08-05T02:02:39Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AC:L/AV:A/A:N/C:L/I:L/PR:N/S:C/UI:N","level":"medium"}],"updated_at":"2026-11-03T02:40:26.778341Z"}],"ghsa":[{"id":"GHSA-4p7h-q24r-h439","title":"A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The...","description":"A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.","status":"published","published":"2022-05-24T17:29:44Z","modified":"2023-01-29T05:04:01Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:45:27.054092Z"}],"nvd":[{"id":"CVE-2019-18989","description":"A partial authentication bypass vulnerability exists on Mediatek MT7620N 1.06 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.","status":"published","published":"2020-09-30T18:15:17.317Z","modified":"2026-06-17T02:25:43.103Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.8,"vector":"AV:A/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:05:47.558959Z"}]}}