{"id":"CVE-2021-40546","aliases":["EUVD-2021-27721","GHSA-mf93-hqq3-h8xg"],"status":"published","title":"Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows attackers (who have the administrator password...","description":"Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows attackers (who have the administrator password) to cause a denial of service (device crash) via a long string in the wifiPwd_5G parameter to /goform/setWifi.","severity":{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.0073,"percentile":0.54713,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-404"],"published":"2023-09-05T00:00:00Z","modified":"2026-06-17T04:07:07Z","products":[{"vendor":"tenda","product":"ac6"},{"vendor":"tenda","product":"ac6_firmware"}],"references":[{"url":"https://github.com/doudoudedi/buffer_overflow/blob/main/Tenda%20AC6%20V4.0-Denial%20of%20Service%20Vulnerability.md","tags":["x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40546"},{"url":"https://github.com/advisories/GHSA-mf93-hqq3-h8xg"}],"sources":{"cve":[{"id":"CVE-2021-40546","description":"Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows attackers (who have the administrator password) to cause a denial of service (device crash) via a long string in the wifiPwd_5G parameter to /goform/setWifi.","status":"published","published":"2023-09-05T00:00:00Z","modified":"2024-10-01T13:11:51.877Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-27721","description":"Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows attackers (who have the administrator password) to cause a denial of service (device crash) via a long string in the wifiPwd_5G parameter to /goform/setWifi.","status":"published","published":"2023-09-05T00:00:00Z","modified":"2024-10-01T13:11:51Z","updated_at":"2026-11-03T00:28:01.909154Z"}],"ghsa":[{"id":"GHSA-mf93-hqq3-h8xg","title":"Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows attackers (who have the administrator password...","description":"Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows attackers (who have the administrator password) to cause a denial of service (device crash) via a long string in the wifiPwd_5G parameter to /goform/setWifi.","status":"published","published":"2023-09-05T21:30:20Z","modified":"2024-04-04T07:29:36Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:56:51.525022Z"}],"nvd":[{"id":"CVE-2021-40546","description":"Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows attackers (who have the administrator password) to cause a denial of service (device crash) via a long string in the wifiPwd_5G parameter to /goform/setWifi.","status":"published","published":"2023-09-05T19:15:48.523Z","modified":"2026-06-17T04:07:07.117Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:07:07.764332Z"}]}}