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CVE-2021-34566
CRITICAL
CVSS: 9.1
Published: 2022-11-09
Modified: 2026-06-17
Description
In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to crash the iocheck process and write memory resulting in loss of integrity and DoS.
Affected Platforms
Wago 762-4203\/8000-001Wago 762-4202\/8000-001Wago 762-4104Wago 762-6204\/8000-001Wago 762-5305\/8000-002Wago 762-4204\/8000-001Wago 762-4206\/8000-001Wago 762-6303\/8000-002 FirmwareWago 762-4301\/8000-002Wago 762-5306\/8000-002