CVE-2021-38434: Fatek Winproladder

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

FATEK Automation WinProladder versions 3.30 and prior lacks proper validation of user-supplied data when parsing project files, which could result in an unexpected sign extension. An attacker could leverage this vulnerability to execute arbitrary code.

Affected products

• Fatek Winproladder: up to and including 3.30

Published 2021-10-18. Last modified 2026-06-17.