CVE-2020-5652 (GCVE-0-2020-5652)
Vulnerability from cvelistv5 – Published: 2020-10-30 03:35 – Updated: 2024-08-04 08:39
VLAI
EPSS
VEX
Summary
Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier , Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication functions of the products via a specially crafted packet, which may lead to a denial of service (DoS) condition .
Severity
7.5 (High)
CWE
- Uncontrolled Resource Consumption
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.mitsubishielectric.co.jp/psirt/vulner… | x_refsource_MISC |
| https://www.mitsubishielectric.com/en/psirt/vulne… | x_refsource_MISC |
| https://jvn.jp/vu/JVNVU96558207/index.html | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mitsubishi Electric Corporation | MELSEC iQ-R, Q and L series |
Affected:
R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier, Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, and L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions
|
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"value": "Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions \u002720\u0027 and earlier, R 04/08/16/32/120 (EN) CPU firmware versions \u002752\u0027 and earlier, R 08/16/32/120 SFCPU firmware versions \u002722\u0027 and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number \u002722081\u0027 and earlier , Q 03/04/06/13/26 UDVCPU serial number \u002722031\u0027 and earlier, Q 04/06/13/26 UDPVCPU serial number \u002722031\u0027 and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication functions of the products via a specially crafted packet, which may lead to a denial of service (DoS) condition ."
},
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"value": "Vulnerabilidad de consumo de recursos incontrolado en el Puerto Ethernet en m\u00f3dulos de CPU de las series MELSEC iQ-R, Q y L (versiones de firmware \"20\" y anteriores de CPU R 00/01/02, versiones firmware \"52\" y anteriores de CPU R 04/08/16/32/120 (EN), versiones de firmware \"22\" y anteriores de SFCPU R 08/16/32/120, todas las versiones de PCPU R 08/16/32/120, todas las versiones de PSFCPU R 08/16/32/120, todas las versiones MTCPU R 16/32/64, UDECPU Q03, n\u00famero de serie \"22081\" y anterior de UDEHCPU Q 04/06/10/13/20/26/50/100, n\u00famero de serie \"22031\" y anteriores de UDVCPU Q 03/04/06/13/26, n\u00famero de serie \"22031\" y anteriores de UDPVCPU Q 04/06/13/26, todas las versiones de DCPU Q 172/173, todas las versiones de DSCPU Q 172/173, todas las versiones MCPU Q 170, todas las versiones de MSCPU Q 170,L 02/06/26 CPU (-P) y L 26 CPU - (P) BT todas las versiones), permite a un atacante remoto no autenticado detener las funciones de comunicaci\u00f3n Ethernet de los productos por medio de un paquete especialmente dise\u00f1ado, lo que puede conducir a la condici\u00f3n denegaci\u00f3n de servicio (DoS)"
}
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"id": "CVE-2020-5652",
"lastModified": "2026-06-17T03:21:45.807",
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"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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