Vulnerability-Lookup

FKIE_CVE-2021-20836

Vulnerability from fkie_nvd - Published: 2021-10-19 03:15 - Updated: 2026-06-17 03:34

Severity

6.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Summary

Out-of-bounds read vulnerability in CX-Supervisor v4.0.0.13 and v4.0.0.16 allows an attacker with administrative privileges to cause information disclosure and/or arbitrary code execution by opening a specially crafted SCS project files.

References

URL	Tags
vultures@jpcert.or.jp	https://jvn.jp/en/vu/JVNVU90041391/index.html	Release Notes, Third Party Advisory
vultures@jpcert.or.jp	https://www.myomron.com/index.php?action=kb&article=1692	Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://jvn.jp/en/vu/JVNVU90041391/index.html	Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.myomron.com/index.php?action=kb&article=1692	Patch, Vendor Advisory

Impacted products

	Vendor	Product	Version
	omron	cx-supervisor	4.0.0.13
	omron	cx-supervisor	4.0.0.16

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "OMRON CX-Supervisor",
          "vendor": "OMRON Corporation",
          "versions": [
            {
              "status": "affected",
              "version": "v4.0.0.13 and v4.0.0.16"
            }
          ]
        }
      ],
      "source": "vultures@jpcert.or.jp"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:omron:cx-supervisor:4.0.0.13:*:*:*:*:*:*:*",
              "matchCriteriaId": "475F2663-8F90-4532-9C3F-3B37FDC96811",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:omron:cx-supervisor:4.0.0.16:*:*:*:*:*:*:*",
              "matchCriteriaId": "482A7868-077A-4E8F-AB9A-D8864FC55C12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Out-of-bounds read vulnerability in CX-Supervisor v4.0.0.13 and v4.0.0.16 allows an attacker with administrative privileges to cause information disclosure and/or arbitrary code execution by opening a specially crafted SCS project files."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de lectura fuera de l\u00edmites en CX-Supervisor versiones v4.0.0.13 y v4.0.0.16, permite a un atacante con privilegios administrativos causar una divulgaci\u00f3n de informaci\u00f3n y/o la ejecuci\u00f3n de c\u00f3digo arbitrario al abrir un archivo de proyecto SCS especialmente dise\u00f1ado"
    }
  ],
  "id": "CVE-2021-20836",
  "lastModified": "2026-06-17T03:34:30.987",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 6.8,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.6,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-10-19T03:15:06.887",
  "references": [
    {
      "source": "vultures@jpcert.or.jp",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://jvn.jp/en/vu/JVNVU90041391/index.html"
    },
    {
      "source": "vultures@jpcert.or.jp",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://www.myomron.com/index.php?action=kb\u0026article=1692"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://jvn.jp/en/vu/JVNVU90041391/index.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://www.myomron.com/index.php?action=kb\u0026article=1692"
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-20836 (GCVE-0-2021-20836)

Vulnerability from cvelistv5 – Published: 2021-10-19 02:00 – Updated: 2024-08-03 17:53

Summary

Severity

No CVSS data available.

CWE

Out-of-bounds Read

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.myomron.com/index.php?action=kb&artic…	x_refsource_MISC
https://jvn.jp/en/vu/JVNVU90041391/index.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
OMRON Corporation	OMRON CX-Supervisor	Affected: v4.0.0.13 and v4.0.0.16

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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          "dateUpdated": "2024-08-03T17:53:22.875Z",
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        ],
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    ],
    "cna": {
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      "problemTypes": [
        {
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            {
              "description": "Out-of-bounds Read",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
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          ],
          "url": "https://jvn.jp/en/vu/JVNVU90041391/index.html"
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      ],
      "x_legacyV4Record": {
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              {
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                    {
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        "problemtype": {
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  },
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}

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.

Detection rules are retrieved from Rulezet.

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.

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.