FKIE_CVE-2020-5668
Vulnerability from fkie_nvd - Published: 2020-11-20 04:15 - Updated: 2026-06-17 03:22
Severity
Summary
Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU firmware version '25' and earlier, R08/16/32/120PSFCPU firmware version '06' and earlier, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, and RJ71GN11-T2 firmware version '11' and earlier) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the unit by receiving a specially crafted SLMP packet
References
| URL | Tags | ||
|---|---|---|---|
| vultures@jpcert.or.jp | https://jvn.jp/vu/JVNVU95980140/index.html | Third Party Advisory | |
| vultures@jpcert.or.jp | https://us-cert.cisa.gov/ics/advisories/icsa-20-324-05 | Third Party Advisory, US Government Resource | |
| vultures@jpcert.or.jp | https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-016.pdf | Vendor Advisory | |
| vultures@jpcert.or.jp | https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-016_en.pdf | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://jvn.jp/vu/JVNVU95980140/index.html | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://us-cert.cisa.gov/ics/advisories/icsa-20-324-05 | Third Party Advisory, US Government Resource | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-016.pdf | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-016_en.pdf | Vendor Advisory |
Impacted products
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"affectedData": [
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"product": "MELSEC iQ-R",
"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
"version": "R00/01/02CPU firmware version \u002719\u0027 and earlier, R04/08/16/32/120 (EN) CPU firmware version \u002751\u0027 and earlier, R08/16/32/120SFCPU firmware version \u002722\u0027 and earlier, R08/16/32/120PCPU firmware version \u002725\u0027 and earlier, R08/16/32/120PSFCPU firmware version \u002706\u0027 and earlier, RJ71EN71 firmware version \u002747\u0027 and earlier, RJ71GF11-T2 firmware version \u002747\u0027 and earlier, RJ72GF15-T2 firmware version \u002707\u0027 and earlier, RJ71GP21-SX firmware version \u002747\u0027 and earlier, RJ71GP21S-SX firmware version \u002747\u0027 and earlier, and RJ71GN11-T2 firmware version \u002711\u0027 and earlier"
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}
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"source": "vultures@jpcert.or.jp"
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"lang": "en",
"value": "Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version \u002719\u0027 and earlier, R04/08/16/32/120 (EN) CPU firmware version \u002751\u0027 and earlier, R08/16/32/120SFCPU firmware version \u002722\u0027 and earlier, R08/16/32/120PCPU firmware version \u002725\u0027 and earlier, R08/16/32/120PSFCPU firmware version \u002706\u0027 and earlier, RJ71EN71 firmware version \u002747\u0027 and earlier, RJ71GF11-T2 firmware version \u002747\u0027 and earlier, RJ72GF15-T2 firmware version \u002707\u0027 and earlier, RJ71GP21-SX firmware version \u002747\u0027 and earlier, RJ71GP21S-SX firmware version \u002747\u0027 and earlier, and RJ71GN11-T2 firmware version \u002711\u0027 and earlier) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the unit by receiving a specially crafted SLMP packet"
},
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"value": "Vulnerabilidad de consumo incontrolado de recursos en los m\u00f3dulos de la serie iQ-R de MELSEC (R00/01/02CPU firmware versi\u00f3n \u002719\u0027 y anteriores, R04/08/16/32/120 (ES) CPU firmware versi\u00f3n \u002751\u0027 y anteriores, R08/16/32/120SFCPU firmware versi\u00f3n \u002722\u0027 y anteriores, R08/16/32/120PCPU firmware versi\u00f3n \u002725\u0027 y anterior, R08/16/32/120PSFCPU firmware versi\u00f3n \u002706\u0027 y anterior, RJ71EN71 firmware versi\u00f3n \u002747\u0027 y anterior, RJ71GF11-T2 firmware versi\u00f3n \u002747\u0027 y anterior, RJ72GF15-T2 firmware versi\u00f3n \u002707\u0027 y anterior, RJ71GP21-SX firmware versi\u00f3n \u002747\u0027 y anterior, RJ71GP21S-SX firmware versi\u00f3n \u002747\u0027 y anterior, y RJ71GN11-T2 firmware versi\u00f3n \u002711\u0027 y anteriores) permite a un atacante remoto no autentificado provocar un error en una CPU y causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en la ejecuci\u00f3n del programa y su comunicaci\u00f3n, o causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en la comunicaci\u00f3n a trav\u00e9s de la unidad mediante la recepci\u00f3n de un paquete SLMP especialmente dise\u00f1ado"
}
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"id": "CVE-2020-5668",
"lastModified": "2026-06-17T03:22:04.080",
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"authentication": "NONE",
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"baseScore": 7.8,
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"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
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"published": "2020-11-20T04:15:11.423",
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"tags": [
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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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