{"id":"CVE-2021-46122","aliases":["EUVD-2021-32822","GHSA-8p6h-x22r-w926"],"status":"published","title":"Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable...","description":"Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01555,"percentile":0.75485,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2022-04-18T15:27:20Z","modified":"2026-06-17T04:14:34Z","products":[{"vendor":"tp-link","product":"tl-wr840n_firmware"}],"references":[{"url":"https://k4m1ll0.com/cve-tplink-tlwr840n-euV620-password-reset.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-46122"},{"url":"https://github.com/advisories/GHSA-8p6h-x22r-w926"}],"sources":{"cve":[{"id":"CVE-2021-46122","description":"Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature.","status":"published","published":"2022-04-18T15:27:20Z","modified":"2024-08-04T05:02:10.349Z","updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2021-32822","description":"Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature.","status":"published","published":"2022-04-18T15:27:20Z","modified":"2024-08-04T05:02:10Z","updated_at":"2026-11-03T03:08:24.682864Z"}],"ghsa":[{"id":"GHSA-8p6h-x22r-w926","title":"Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable...","description":"Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature.","status":"published","published":"2022-04-19T00:00:56Z","modified":"2023-01-27T05:01:43Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:41:57.342579Z"}],"nvd":[{"id":"CVE-2021-46122","description":"Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature.","status":"published","published":"2022-04-18T16:15:08.003Z","modified":"2026-06-17T04:14:34.153Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}