FKIE_CVE-2020-18756

Vulnerability from fkie_nvd - Published: 2021-08-13 17:15 - Updated: 2026-06-17 02:59
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
An arbitrary memory access vulnerability in the EPA protocol of Dut Computer Control Engineering Co.'s PLC MAC1100 allows attackers to read the contents of any variable area.
References
cve@mitre.orghttps://github.com/Ni9htMar3/vulnerability/blob/master/PLC/DCCE/DCCE%20MAC1100%20PLC_read.mdExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/Ni9htMar3/vulnerability/blob/master/PLC/DCCE/DCCE%20MAC1100%20PLC_read.mdExploit, Third Party Advisory
Impacted products
Vendor Product Version
dcce mac1100_plc_firmware -
dcce mac1100_plc -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:dcce:mac1100_plc_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "4F278A79-2207-40F1-917E-0D301886219D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:dcce:mac1100_plc:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "8FC015D5-CFB3-4356-8ADE-1AE42820A40B",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An arbitrary memory access vulnerability in the EPA protocol of Dut Computer Control Engineering Co.\u0027s PLC MAC1100 allows attackers to read the contents of any variable area."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de acceso arbitrario a la memoria en el protocolo EPA del PLC MAC1100 de Dut Computer Control Engineering Co. Permite a atacantes leer el contenido de cualquier \u00e1rea variable.\n"
    }
  ],
  "id": "CVE-2020-18756",
  "lastModified": "2026-06-17T02:59:27.613",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-13T17:15:16.357",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Ni9htMar3/vulnerability/blob/master/PLC/DCCE/DCCE%20MAC1100%20PLC_read.md"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory"
      ],
      "url": "https://github.com/Ni9htMar3/vulnerability/blob/master/PLC/DCCE/DCCE%20MAC1100%20PLC_read.md"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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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

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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.