{"id":"CVE-2018-7830","aliases":["EUVD-2018-19542","GHSA-334h-jmqc-fx27"],"status":"published","title":"Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')...","description":"Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where a denial of service can occur for ~1 minute by sending a specially crafted HTTP request.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02423,"percentile":0.84286,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-113"],"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-2018-7830"},{"url":"https://github.com/advisories/GHSA-334h-jmqc-fx27"}],"sources":{"cve":[{"id":"CVE-2018-7830","description":"Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where a denial of service can occur for ~1 minute by sending a specially crafted HTTP request.","status":"published","published":"2018-11-30T19:00:00Z","modified":"2024-08-05T06:37:59.474Z","updated_at":"2026-11-02T14:35:10.313768Z"}],"euvd":[{"id":"EUVD-2018-19542","description":"Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where a denial of service can occur for ~1 minute by sending a specially crafted HTTP request.","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-334h-jmqc-fx27","title":"Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')...","description":"Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where a denial of service can occur for ~1 minute by sending a specially crafted HTTP request.","status":"published","published":"2022-05-14T01:44:38Z","modified":"2023-02-02T05:04:25Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-113"],"updated_at":"2026-11-02T14:51:52.184259Z"}],"nvd":[{"id":"CVE-2018-7830","description":"Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where a denial of service can occur for ~1 minute by sending a specially crafted HTTP request.","status":"published","published":"2018-11-30T19:29:00.547Z","modified":"2026-06-17T02:03:49.11Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-113"],"updated_at":"2026-11-02T14:04:49.995593Z"}]}}