CVE-2018-7794: Schneider Electric 140cpu65150 Firmware

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when reading data with invalid index using Modbus TCP.

Affected products

• Schneider Electric 140cpu65150 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu65160 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu65160s Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu65260 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu65860 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu67060 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu67160 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu67160s Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu67260 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu67261 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric 140cpu67861 Firmware: before 3.52 (fixed in 3.52)
• Schneider Electric Modicon m340 Firmware: before 3.01 (fixed in 3.01)
• Schneider Electric Modicon m580 Firmware: before 2.80 (fixed in 2.80)
• Schneider Electric TSXH5724M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXH5744M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP57104M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP57154M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP571634M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP57204M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP57254M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP572634M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP57304M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP57354M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP573634M Firmware: before 3.20 (fixed in 3.20)
• Schneider Electric TSXP57454M Firmware: before 3.20 (fixed in 3.20)
• and 4 more

Published 2020-01-06. Last modified 2026-06-17.