{"id":"CVE-2021-20649","aliases":["EUVD-2021-8067","GHSA-5244-5vqh-qwmc"],"status":"published","title":"ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the...","description":"ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. As a result, an arbitrary OS command may be executed on the affected device.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00335,"percentile":0.27259,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2021-02-12T06:15:50Z","modified":"2026-06-17T03:34:11Z","products":[{"vendor":"elecom","product":"wrc-300febk-s_firmware"},{"vendor":"elecom co.,ltd.","product":"wrc-300febk-s"}],"references":[{"url":"https://www.elecom.co.jp/news/security/20210126-01/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/en/jp/JVN47580234/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20649"},{"url":"https://github.com/advisories/GHSA-5244-5vqh-qwmc"}],"sources":{"cve":[{"id":"CVE-2021-20649","description":"ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. As a result, an arbitrary OS command may be executed on the affected device.","status":"published","published":"2021-02-12T06:15:50Z","modified":"2024-08-03T17:45:45.385Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8067","description":"ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. As a result, an arbitrary OS command may be executed on the affected device.","status":"published","published":"2021-02-12T06:15:50Z","modified":"2024-08-03T17:45:45Z","updated_at":"2026-11-03T03:25:08.888273Z"}],"ghsa":[{"id":"GHSA-5244-5vqh-qwmc","title":"ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the...","description":"ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. As a result, an arbitrary OS command may be executed on the affected device.","status":"published","published":"2022-05-24T17:42:04Z","modified":"2023-01-29T05:05:41Z","cwes":["CWE-295"],"updated_at":"2026-11-02T14:45:51.307262Z"}],"nvd":[{"id":"CVE-2021-20649","description":"ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. As a result, an arbitrary OS command may be executed on the affected device.","status":"published","published":"2021-02-12T07:15:15.387Z","modified":"2026-06-17T03:34:11.103Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:06:50.031227Z"}]}}