{"id":"CVE-2021-20843","aliases":["EUVD-2021-8253","GHSA-pf3w-79fm-4mjf"],"status":"published","title":"Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier,...","description":"Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to alter the settings of the product via a specially crafted web page.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00693,"percentile":0.53347,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-829"],"published":"2021-11-24T08:25:44Z","modified":"2026-06-17T03:34:31Z","products":[{"vendor":"ntt-west","product":"biz_box_nvr510_firmware"},{"vendor":"ntt-west","product":"biz_box_nvr700w_firmware"},{"vendor":"ntt-west","product":"biz_box_rtx1210_firmware"},{"vendor":"ntt-west","product":"biz_box_rtx830_firmware"},{"vendor":"yamaha","product":"nvr510_firmware"},{"vendor":"yamaha","product":"nvr700w_firmware"},{"vendor":"yamaha","product":"rtx1210_firmware"},{"vendor":"yamaha","product":"rtx830_firmware"},{"vendor":"yamaha corporation","product":"rtx830, nvr510, nvr700w, rtx1210"}],"references":[{"url":"https://www.ntt-west.co.jp/smb/kiki_info/info/211109.html","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://business.ntt-east.co.jp/topics/2021/11_09.html","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory"]},{"url":"http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://jvn.jp/en/vu/JVNVU91161784/index.html","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20843"},{"url":"https://github.com/advisories/GHSA-pf3w-79fm-4mjf"}],"sources":{"cve":[{"id":"CVE-2021-20843","description":"Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to alter the settings of the product via a specially crafted web page.","status":"published","published":"2021-11-24T08:25:44Z","modified":"2024-08-03T17:53:22.719Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8253","description":"Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to alter the settings of the product via a specially crafted web page.","status":"published","published":"2021-11-24T08:25:44Z","modified":"2024-08-03T17:53:22Z","updated_at":"2026-11-03T03:25:07.874589Z"}],"ghsa":[{"id":"GHSA-pf3w-79fm-4mjf","title":"Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier,...","description":"Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to alter the settings of the product via a specially crafted web page.","status":"published","published":"2022-05-24T19:21:18Z","modified":"2023-01-30T05:03:51Z","cwes":["CWE-829"],"updated_at":"2026-11-02T14:46:55.198962Z"}],"nvd":[{"id":"CVE-2021-20843","description":"Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to alter the settings of the product via a specially crafted web page.","status":"published","published":"2021-11-24T16:15:13.23Z","modified":"2026-06-17T03:34:31.73Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T14:07:01.428028Z"}]}}