Vulnerability-Lookup

FKIE_CVE-2021-42536

Vulnerability from fkie_nvd - Published: 2021-10-22 14:15 - Updated: 2026-06-17 04:09

Severity

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

Summary

The affected product is vulnerable to a disclosure of peer username and password by allowing all users access to read global variables.

References

	URL	Tags
	ics-cert@hq.dhs.gov	https://us-cert.cisa.gov/ics/advisories/icsa-21-278-02	Patch, Third Party Advisory, US Government Resource
	af854a3a-2127-422b-91ae-364da2661108	https://us-cert.cisa.gov/ics/advisories/icsa-21-278-02	Patch, Third Party Advisory, US Government Resource

Impacted products

Vendor	Product	Version
emerson	wireless_1410_gateway_firmware	*
emerson	wireless_1410_gateway	*
emerson	wireless_1410d_gateway_firmware	*
emerson	wireless_1410d_gateway	*
emerson	wireless_1420_gateway_firmware	*
emerson	wireless_1420_gateway	-

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "WirelessHART Gateway",
          "vendor": "Emerson",
          "versions": [
            {
              "lessThanOrEqual": "4.7.94",
              "status": "affected",
              "version": "1410",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.7.94",
              "status": "affected",
              "version": "1410D",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.7.94",
              "status": "affected",
              "version": "1420",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "ics-cert@hq.dhs.gov"
    }
  ],
  "configurations": [
    {
      "nodes": [
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              "versionEndExcluding": "4.7.94",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
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              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
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              "matchCriteriaId": "A431B208-B3F6-4FDC-9476-7EA210CF451B",
              "versionEndExcluding": "4.7.94",
              "vulnerable": true
            }
          ],
          "negate": false,
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        },
        {
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              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
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              "versionEndExcluding": "4.7.94",
              "vulnerable": true
            }
          ],
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          ],
          "negate": false,
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      "operator": "AND"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The affected product is vulnerable to a disclosure of peer username and password by allowing all users access to read global variables."
    },
    {
      "lang": "es",
      "value": "El producto afectado es vulnerable a una divulgaci\u00f3n del nombre de usuario y la contrase\u00f1a de los compa\u00f1eros al permitir a todos los usuarios el acceso a una lectura de variables globales"
    }
  ],
  "id": "CVE-2021-42536",
  "lastModified": "2026-06-17T04:09:47.173",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 5.9,
        "source": "ics-cert@hq.dhs.gov",
        "type": "Secondary"
      },
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-10-22T14:15:08.750",
  "references": [
    {
      "source": "ics-cert@hq.dhs.gov",
      "tags": [
        "Patch",
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-278-02"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-278-02"
    }
  ],
  "sourceIdentifier": "ics-cert@hq.dhs.gov",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "ics-cert@hq.dhs.gov",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-668"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-42536 (GCVE-0-2021-42536)

Vulnerability from cvelistv5 – Published: 2021-10-22 13:23 – Updated: 2024-09-17 00:41

Title

Emerson WirelessHART Gateway

Summary

The affected product is vulnerable to a disclosure of peer username and password by allowing all users access to read global variables.

Severity

8 (High)


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

CWE

CWE-200 - Information Exposure

Assigner

icscert icscert root

References

1 reference

URL	Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-278-02	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Emerson	WirelessHART Gateway	Affected: 1410 , ≤ 4.7.94 (custom) Affected: 1410D , ≤ 4.7.94 (custom) Affected: 1420 , ≤ 4.7.94 (custom)

Date Public

2021-10-05 00:00

Credits

Amir Preminger of Claroty reported these vulnerabilities to CISA

Show details on NVD website

JSON

To clipboard

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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:30:38.286Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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              "x_transferred"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-278-02"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "WirelessHART Gateway",
          "vendor": "Emerson",
          "versions": [
            {
              "lessThanOrEqual": "4.7.94",
              "status": "affected",
              "version": "1410",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.7.94",
              "status": "affected",
              "version": "1410D",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.7.94",
              "status": "affected",
              "version": "1420",
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      "credits": [
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      ],
      "metrics": [
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
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      "solutions": [
        {
          "lang": "en",
          "value": "Emerson recommends upgrading to v4.7.105 to address these vulnerabilities.\n\nUsers can visit the Emerson Gate Firmware site for and download instructions.\n\nIf affected users do not yet have a free Guardian account, please see the updated Emerson Gateway Firmware download process by following the link above and viewing the download guide."
        }
      ],
      "source": {
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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.