{"id":"CVE-2018-7831","aliases":["EUVD-2018-19543","GHSA-p8fg-26j2-2q9g"],"status":"published","title":"An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability...","description":"An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 allowing an attacker to send a specially crafted URL to a currently authenticated web server user to execute a password change on the web server.","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00635,"percentile":0.50718,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-352","CWE-79"],"published":"2018-11-30T19:00:00Z","modified":"2026-06-17T02:03:49Z","products":[{"vendor":"schneider electric se","product":"embedded web servers in all modicon m340, premium, quantum plcs and bmxnor0200"},{"vendor":"schneider-electric","product":"modicom_bmxnor0200h_firmware"},{"vendor":"schneider-electric","product":"modicom_m340_firmware"},{"vendor":"schneider-electric","product":"modicom_premium_firmware"},{"vendor":"schneider-electric","product":"modicom_quantum_firmware"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2018-38","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-7831"},{"url":"https://github.com/advisories/GHSA-p8fg-26j2-2q9g"}],"sources":{"cve":[{"id":"CVE-2018-7831","description":"An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 allowing an attacker to send a specially crafted URL to a currently authenticated web server user to execute a password change on the web server.","status":"published","published":"2018-11-30T19:00:00Z","modified":"2024-08-05T06:37:59.349Z","updated_at":"2026-11-02T14:35:09.908186Z"}],"euvd":[{"id":"EUVD-2018-19543","description":"An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 allowing an attacker to send a specially crafted URL to a currently authenticated web server user to execute a password change on the web server.","status":"published","published":"2018-11-30T19:00:00Z","modified":"2024-08-05T06:37:59Z","updated_at":"2026-11-03T02:40:04.680788Z"}],"ghsa":[{"id":"GHSA-p8fg-26j2-2q9g","title":"An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability...","description":"An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 allowing an attacker to send a specially crafted URL to a currently authenticated web server user to execute a password change on the web server.","status":"published","published":"2022-05-13T01:20:37Z","modified":"2023-02-01T05:05:59Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:50:18.532439Z"}],"nvd":[{"id":"CVE-2018-7831","description":"An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 allowing an attacker to send a specially crafted URL to a currently authenticated web server user to execute a password change on the web server.","status":"published","published":"2018-11-30T19:29:00.593Z","modified":"2026-06-17T02:03:49.233Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79","CWE-352"],"updated_at":"2026-11-02T14:04:49.995593Z"}]}}