Vulnerability-Lookup

FKIE_CVE-2021-27482

Vulnerability from fkie_nvd - Published: 2022-05-12 20:15 - Updated: 2026-06-17 03:44

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may allow the attacker to read arbitrary data.

References

URL	Tags
ics-cert@hq.dhs.gov	https://github.com/EIPStackGroup/OpENer	Third Party Advisory
ics-cert@hq.dhs.gov	https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02	Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108	https://github.com/EIPStackGroup/OpENer	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02	Third Party Advisory, US Government Resource

Impacted products

	Vendor	Product	Version
	opener_project	opener	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "OpENer EtherNet/IP",
          "vendor": "EIPStackGroup",
          "versions": [
            {
              "lessThan": "Feb 10, 2021",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "ics-cert@hq.dhs.gov"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:opener_project:opener:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1EE035AE-99DF-4AA0-B75F-679A6F57C194",
              "versionEndIncluding": "2.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may allow the attacker to read arbitrary data."
    },
    {
      "lang": "es",
      "value": "Un paquete espec\u00edficamente dise\u00f1ado enviado por un atacante a EIPStackGroup OpENer EtherNet/IP commits y versiones anteriores a 10 de febrero de 2021, puede permitir al atacante leer datos arbitrarios"
    }
  ],
  "id": "CVE-2021-27482",
  "lastModified": "2026-06-17T03:44:57.227",
  "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": "ics-cert@hq.dhs.gov",
        "type": "Secondary"
      },
      {
        "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-27482",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-16T15:56:25.495662Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2022-05-12T20:15:13.763",
  "references": [
    {
      "source": "ics-cert@hq.dhs.gov",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/EIPStackGroup/OpENer"
    },
    {
      "source": "ics-cert@hq.dhs.gov",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/EIPStackGroup/OpENer"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02"
    }
  ],
  "sourceIdentifier": "ics-cert@hq.dhs.gov",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "ics-cert@hq.dhs.gov",
      "type": "Secondary"
    }
  ]
}

CVE-2021-27482 (GCVE-0-2021-27482)

Vulnerability from cvelistv5 – Published: 2022-05-12 19:18 – Updated: 2025-04-16 16:22

Title

EIPStackGroup OpENer Ethernet/IP Out-of-bounds Read

Summary

A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may allow the attacker to read arbitrary data.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-16 15:56 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

icscert icscert root

References

2 references

URL	Tags
https://www.cisa.gov/uscert/ics/advisories/icsa-2…	x_refsource_CONFIRM
https://github.com/EIPStackGroup/OpENer	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
EIPStackGroup	OpENer EtherNet/IP	Affected: unspecified , < Feb 10, 2021 (custom)

Credits

Tal Keren and Sharon Brizinov of Claroty reported these vulnerabilities to CISA.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:48:17.255Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/EIPStackGroup/OpENer"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-27482",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-16T15:56:25.495662Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-16T16:22:25.057Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "OpENer EtherNet/IP",
          "vendor": "EIPStackGroup",
          "versions": [
            {
              "lessThan": "Feb 10, 2021",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Tal Keren and Sharon Brizinov of Claroty reported these vulnerabilities to CISA."
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may allow the attacker to read arbitrary data."
        }
      ],
      "metrics": [
        {
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            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-05-12T19:18:03.000Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/EIPStackGroup/OpENer"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "The maintainer of OpENer recommends those affected to apply the latest commits available."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "EIPStackGroup OpENer Ethernet/IP Out-of-bounds Read",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
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      "x_legacyV4Record": {
        "CVE_data_meta": {
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          "STATE": "PUBLIC",
          "TITLE": "EIPStackGroup OpENer Ethernet/IP Out-of-bounds Read"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "OpENer EtherNet/IP",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "Feb 10, 2021"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "EIPStackGroup"
              }
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          }
        },
        "credit": [
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            "lang": "eng",
            "value": "Tal Keren and Sharon Brizinov of Claroty reported these vulnerabilities to CISA."
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            "userInteraction": "NONE",
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                  "value": "CWE-125: Out-of-bounds Read"
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        },
        "references": {
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              "name": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02",
              "refsource": "CONFIRM",
              "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02"
            },
            {
              "name": "https://github.com/EIPStackGroup/OpENer",
              "refsource": "CONFIRM",
              "url": "https://github.com/EIPStackGroup/OpENer"
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          ]
        },
        "solution": [
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    "dateReserved": "2021-02-19T00:00:00.000Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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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.