PatchSiren

Wibu CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

CRITICAL Wibu CVE published 2026-02-26

CVE-2023-3935

CVE-2023-3935 is a critical remote code execution vulnerability tied to Festo Automation Suite installations that include CODESYS components. The advisory states that a heap buffer overflow in the Wibu CodeMeter Runtime network service can let an unauthenticated remote attacker gain full host access, so exposed systems should be prioritized for immediate review and patching.