{"id":"CVE-2021-20853","aliases":["EUVD-2021-8262","GHSA-mjp9-fwhq-c9rm"],"status":"published","title":"ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and...","description":"ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute arbitrary OS commands via unspecified vectors.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00436,"percentile":0.38223,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2021-12-01T02:15:41Z","modified":"2026-06-17T03:34:32Z","products":[{"vendor":"elecom","product":"wrh-733gbk_firmware"},{"vendor":"elecom","product":"wrh-733gwh_firmware"},{"vendor":"elecom co.,ltd.","product":"elecom lan routers"}],"references":[{"url":"https://www.elecom.co.jp/news/security/20211130-01/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/en/jp/JVN88993473/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20853"},{"url":"https://github.com/advisories/GHSA-mjp9-fwhq-c9rm"}],"sources":{"cve":[{"id":"CVE-2021-20853","description":"ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute arbitrary OS commands via unspecified vectors.","status":"published","published":"2021-12-01T02:15:41Z","modified":"2024-08-03T17:53:23.052Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8262","description":"ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute arbitrary OS commands via unspecified vectors.","status":"published","published":"2021-12-01T02:15:41Z","modified":"2024-08-03T17:53:23Z","updated_at":"2026-11-03T03:25:07.874589Z"}],"ghsa":[{"id":"GHSA-mjp9-fwhq-c9rm","title":"ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and...","description":"ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute arbitrary OS commands via unspecified vectors.","status":"published","published":"2021-12-02T00:01:00Z","modified":"2023-02-01T05:06:33Z","cwes":["CWE-78"],"updated_at":"2026-11-02T14:50:22.333418Z"}],"nvd":[{"id":"CVE-2021-20853","description":"ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute arbitrary OS commands via unspecified vectors.","status":"published","published":"2021-12-01T03:15:06.757Z","modified":"2026-06-17T03:34:32.657Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":5.2,"vector":"AV:A/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}