CVE-2022-2003: Automationdirect d0-06aa Firmware

Critical severity, CVSS 9.1. EPSS: 0.7% chance of exploitation in the next 30 days.

AutomationDirect DirectLOGIC is vulnerable to a specifically crafted serial message to the CPU serial port that will cause the PLC to respond with the PLC password in cleartext. This could allow an attacker to access and make unauthorized changes. This issue affects: AutomationDirect DirectLOGIC D0-06 series CPUs D0-06DD1 versions prior to 2.72; D0-06DD2 versions prior to 2.72; D0-06DR versions prior to 2.72; D0-06DA versions prior to 2.72; D0-06AR versions prior to 2.72; D0-06AA versions prior to 2.72; D0-06DD1-D versions prior to 2.72; D0-06DD2-D versions prior to 2.72; D0-06DR-D versions prior to 2.72;

Affected products

• Automationdirect d0-06aa Firmware: before 2.72 (fixed in 2.72)
• Automationdirect d0-06ar Firmware: before 2.72 (fixed in 2.72)
• Automationdirect d0-06da Firmware: before 2.72 (fixed in 2.72)
• Automationdirect d0-06dd1-D Firmware: before 2.72 (fixed in 2.72)
• Automationdirect d0-06dd1 Firmware: before 2.72 (fixed in 2.72)
• Automationdirect d0-06dd2-D Firmware: before 2.72 (fixed in 2.72)
• Automationdirect d0-06dd2 Firmware: before 2.72 (fixed in 2.72)
• Automationdirect d0-06dr-D Firmware: before 2.72 (fixed in 2.72)
• Automationdirect d0-06dr Firmware: before 2.72 (fixed in 2.72)

Published 2022-08-31. Last modified 2026-06-17.