CVE-2025-1468: Codesys Runtime Toolkit

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

An unauthenticated remote attacker can gain access to sensitive information including authentication information when using CODESYS OPC UA Server with the non-default Basic128Rsa15 security policy.

Affected products

• Codesys Codesys Runtime Toolkit: before 3.5.21.0 (fixed in 3.5.21.0)

Published 2025-03-18. Last modified 2026-06-17.