CVE-2021-32978: Automationdirect c0-10are-D Firmware

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

The programming protocol allows for a previously entered password and lock state to be read by an attacker. If the previously entered password was successful, the attacker can then use the password to unlock Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00.

Affected products

• Automationdirect c0-10are-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-10dd1e-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-10dd2e-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-10dre-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-11are-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-11dd1e-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-11dd2e-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-11dre-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12are-1-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12are-2-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12are-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dd1e-1-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dd1e-2-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dd1e-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dd2e-1-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dd2e-2-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dd2e-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dre-1-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dre-2-D Firmware: before 3.00 (fixed in 3.00)
• Automationdirect c0-12dre-D Firmware: before 3.00 (fixed in 3.00)

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