CVE-2022-1068: Modbustools Modbus Slave

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

Modbus Tools Modbus Slave (versions 7.4.2 and prior) is vulnerable to a stack-based buffer overflow in the registration field. This may cause the program to crash when a long character string is used.

Affected products

• Modbustools Modbus Slave: before 7.4.3 (fixed in 7.4.3)

Published 2022-04-01. Last modified 2026-06-17.