CVE-2018-7811: Schneider Electric Modicom BMXNOR0200H Firmware

Critical severity, CVSS 9.8. EPSS: 3.5% chance of exploitation in the next 30 days.

An Unverified Password Change vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 which could allow an unauthenticated remote user to access the change password function of the web server

Affected products

• Schneider Electric Modicom BMXNOR0200H Firmware: any version
• Schneider Electric Modicom m340 Firmware: any version
• Schneider Electric Modicom Premium Firmware: any version
• Schneider Electric Modicom Quantum Firmware: any version

Published 2018-11-30. Last modified 2026-06-17.