High severity7.5NVD Advisory· Published Nov 30, 2018· Updated Jun 17, 2026
CVE-2018-7830
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9- cpe:2.3:o:schneider-electric:modicom_bmxnor0200h_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:modicom_m340_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:modicom_premium_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:modicom_quantum_firmware:*:*:*:*:*:*:*:*
- Schneider Electric SE/Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200v5Range: Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200
Patches
Vulnerability mechanics
References
2- www.tenable.com/security/research/tra-2018-38nvdExploitThird Party Advisory
- www.schneider-electric.com/en/download/document/SEVD-2018-327-01/nvdVendor Advisory
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