CVE-2020-7523: Schneider Electric Modbus Driver Suite

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Privilege Management vulnerability exists in Schneider Electric Modbus Serial Driver (see security notification for versions) which could cause local privilege escalation when the Modbus Serial Driver service is invoked. The driver does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected products

• Schneider Electric Modbus Driver Suite: before 14.15.0.0 (fixed in 14.15.0.0)
• Schneider Electric Modbus Serial Driver: before 2.20_ie_30 (fixed in 2.20_ie_30); before 3.20_ie_30 (fixed in 3.20_ie_30)

Published 2020-08-31. Last modified 2026-06-17.