CVE-2021-34566

WAGO I/O-Check Service prone to Memory Overflow

Published Nov 9, 2022 CVSS 3.1 · 9.1 Critical EPSS 1.4% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-21216 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Subscriptions

Wago 750-8100 750-8100 Firmware 750-8101 750-8101\/025-000 750-8101\/025-000 Firmware 750-8101 Firmware 750-8102 750-8102\/025-000 750-8102\/025-000 Firmware 750-8102 Firmware 750-8202 750-8202\/000-011 750-8202\/000-011 Firmware 750-8202\/000-012 750-8202\/000-012 Firmware 750-8202\/000-022 750-8202\/000-022 Firmware 750-8202\/025-000 750-8202\/025-000 Firmware 750-8202\/025-001 750-8202\/025-001 Firmware 750-8202\/025-002 750-8202\/025-002 Firmware 750-8202\/040-000 750-8202\/040-000 Firmware 750-8202\/040-001 750-8202\/040-001 Firmware 750-8202 Firmware 752-8303\/8000-002 752-8303\/8000-002 Firmware 762-4101 762-4101 Firmware 762-4102 762-4102 Firmware 762-4103 762-4103 Firmware 762-4104 762-4104 Firmware 762-4201\/8000-001 762-4201\/8000-001 Firmware 762-4202\/8000-001 762-4202\/8000-001 Firmware 762-4203\/8000-001 762-4203\/8000-001 Firmware 762-4204\/8000-001 762-4204\/8000-001 Firmware 762-4205\/8000-001 762-4205\/8000-001 Firmware 762-4205\/8000-002 762-4205\/8000-002 Firmware 762-4206\/8000-001 762-4206\/8000-001 Firmware 762-4206\/8000-002 762-4206\/8000-002 Firmware 762-4301\/8000-002 762-4301\/8000-002 Firmware 762-4302\/8000-002 762-4302\/8000-002 Firmware 762-4303\/8000-002 762-4303\/8000-002 Firmware 762-4304\/8000-002 762-4304\/8000-002 Firmware 762-4305\/8000-002 762-4305\/8000-002 Firmware 762-4306\/8000-002 762-4306\/8000-002 Firmware 762-5203\/8000-001 762-5203\/8000-001 Firmware 762-5204\/8000-001 762-5204\/8000-001 Firmware 762-5205\/8000-001 762-5205\/8000-001 Firmware 762-5206\/8000-001 762-5206\/8000-001 Firmware 762-5303\/8000-002 762-5303\/8000-002 Firmware 762-5304\/8000-002 762-5304\/8000-002 Firmware 762-5305\/8000-002 762-5305\/8000-002 Firmware 762-5306\/8000-002 762-5306\/8000-002 Firmware 762-6201\/8000-001 762-6201\/8000-001 Firmware 762-6202\/8000-001 762-6202\/8000-001 Firmware 762-6203\/8000-001 762-6203\/8000-001 Firmware 762-6204\/8000-001 762-6204\/8000-001 Firmware 762-6301\/8000-002 762-6301\/8000-002 Firmware 762-6302\/8000-002 762-6302\/8000-002 Firmware 762-6303\/8000-002 762-6303\/8000-002 Firmware 762-6304\/8000-002 762-6304\/8000-002 Firmware
Weaknesses

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
May 1, 2025, 2:21 PM
Reserved
Jun 10, 2021, 7:19 PM
Status
Modified
Published
Nov 9, 2022, 4:15 PM
Modified
Jun 17, 2026, 3:56 AM