{"id":"CVE-2021-27114","aliases":["EUVD-2021-13884","GHSA-h8c7-76x8-mr96"],"status":"published","title":"An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the...","description":"An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the\"'s_ip\" and \"s_mac\" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-12","score":0.24552,"percentile":0.97909,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-04-14T13:54:04Z","modified":"2026-06-17T03:44:18Z","products":[{"vendor":"dlink","product":"dir-816_firmware"}],"references":[{"url":"https://www.dlink.com/en/security-bulletin/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://github.com/GD008/vuln/blob/main/DIR-816_stackoverflow.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27114"},{"url":"https://github.com/advisories/GHSA-h8c7-76x8-mr96"}],"sources":{"cve":[{"id":"CVE-2021-27114","description":"An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the\"'s_ip\" and \"s_mac\" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.","status":"published","published":"2021-04-14T13:54:04Z","modified":"2024-08-03T20:40:47.3Z","updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-13884","description":"An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the\"'s_ip\" and \"s_mac\" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.","status":"published","published":"2021-04-14T13:54:04Z","modified":"2024-08-03T20:40:47Z","updated_at":"2026-11-03T03:24:50.383074Z"}],"ghsa":[{"id":"GHSA-h8c7-76x8-mr96","title":"An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the...","description":"An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the\"'s_ip\" and \"s_mac\" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.","status":"published","published":"2022-05-24T17:47:34Z","modified":"2023-01-29T05:07:16Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:09.625645Z"}],"nvd":[{"id":"CVE-2021-27114","description":"An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the\"'s_ip\" and \"s_mac\" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.","status":"published","published":"2021-04-14T14:15:13.647Z","modified":"2026-06-17T03:44:18.633Z","cvss":[{"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"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:51.610648Z"}]}}