CVE-2018-7788: Schneider Electric Modicon Quantum Firmware

Medium severity, CVSS 6.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A CWE-255 Credentials Management vulnerability exists in Modicon Quantum with firmware versions prior to V2.40. which could cause a Denial Of Service when using a Telnet connection.

Affected products

• Schneider Electric Modicon Quantum Firmware: before 2.40 (fixed in 2.40)

Published 2019-05-22. Last modified 2026-06-17.