CVE-2018-7758: Schneider Electric Micom p141 Firmware

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

A denial of service vulnerability exists in Schneider Electric's MiCOM Px4x (P540 range excluded) with legacy Ethernet board, MiCOM P540D Range with Legacy Ethernet Board, and MiCOM Px4x Rejuvenated could lose network communication in case of TCP/IP open requests on port 20000 (DNP3oE) if an older TCI/IP session is still open with identical IP address and port number.

Affected products

• Schneider Electric Micom p141 Firmware: affected versions not specified
• Schneider Electric Micom p142 Firmware: affected versions not specified
• Schneider Electric Micom p143 Firmware: affected versions not specified
• Schneider Electric Micom p145 Firmware: affected versions not specified
• Schneider Electric Micom p441 Firmware: affected versions not specified
• Schneider Electric Micom p442 Firmware: affected versions not specified
• Schneider Electric Micom p443 Firmware: affected versions not specified
• Schneider Electric Micom p444 Firmware: affected versions not specified
• Schneider Electric Micom p445 Firmware: affected versions not specified
• Schneider Electric Micom p446 Firmware: affected versions not specified
• Schneider Electric Micom p541 Firmware: affected versions not specified
• Schneider Electric Micom p542 Firmware: affected versions not specified
• Schneider Electric Micom p543 Firmware: affected versions not specified
• Schneider Electric Micom p544 Firmware: affected versions not specified
• Schneider Electric Micom p545 Firmware: affected versions not specified
• Schneider Electric Micom p546 Firmware: affected versions not specified
• Schneider Electric Micom p642 Firmware: affected versions not specified
• Schneider Electric Micom p643 Firmware: affected versions not specified
• Schneider Electric Micom p645 Firmware: affected versions not specified
• Schneider Electric Micom p746 Firmware: affected versions not specified
• Schneider Electric Micom p841a Firmware: affected versions not specified
• Schneider Electric Micom p841b Firmware: affected versions not specified
• Schneider Electric Micom p849 Firmware: affected versions not specified

Published 2018-04-18. Last modified 2026-06-17.