CVE-2021-34566 (GCVE-0-2021-34566)
Vulnerability from cvelistv5 – Published: 2022-11-09 15:17 – Updated: 2025-05-01 14:21
VLAI
EPSS
VEX
Title
WAGO I/O-Check Service prone to Memory Overflow
Summary
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.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-01 14:21 UTC
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
CERTVDE
CNA
References
1 reference
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| WAGO | 750-81xx/xxx-xxxFW |
Affected:
FW1 , ≤ FW18 Patch 2
(custom)
|
|
| WAGO | 750-82xx/xxx-xxx |
Affected:
FW1 , ≤ FW18 Patch 2
(custom)
|
|
| WAGO | 752-8303/8000-0002 |
Affected:
FW1 , ≤ FW18 Patch 2
(custom)
|
|
| WAGO | 762-4xxx |
Affected:
FW1 , ≤ FW18 Patch 2
(custom)
|
|
| WAGO | 762-5xxx |
Affected:
FW1 , ≤ FW18 Patch 2
(custom)
|
|
| WAGO | 762-6xxx |
Affected:
FW1 , ≤ FW18 Patch 2
(custom)
|
Date Public
2021-06-29 10:00
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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