CVE-2026-6284: Horner Automation Cscape

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

An attacker with network access to the PLC is able to brute force discover passwords to gain unauthorized access to systems and services. The limited password complexity and no password input limiters makes brute force password enumeration possible.

Affected products

• Horner Automation Cscape: version 10.0 only
• Horner Automation XL4 PLC: version 16.32.0 only
• Horner Automation XL7 PLC: version 15.60 only

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