Vulnerability-Lookup

FKIE_CVE-2021-38421

Vulnerability from fkie_nvd - Published: 2021-12-20 21:15 - Updated: 2026-06-17 04:02

Severity

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

Summary

Fuji Electric V-Server Lite and Tellus Lite V-Simulator prior to v4.0.12.0 is vulnerable to an out-of-bounds read, which may allow an attacker to read sensitive information from other memory locations or cause a crash.

References

	URL	Tags
	ics-cert@hq.dhs.gov	https://www.cisa.gov/uscert/ics/advisories/icsa-21-299-01	Patch, Third Party Advisory, US Government Resource
	af854a3a-2127-422b-91ae-364da2661108	https://www.cisa.gov/uscert/ics/advisories/icsa-21-299-01	Patch, Third Party Advisory, US Government Resource

Impacted products

	Vendor	Product	Version
	fujielectric	v-server	*
	fujielectric	v-simulator	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "V-Server Lite",
          "vendor": "Fuji Electric",
          "versions": [
            {
              "lessThan": "4.0.12.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Tellus Lite V-Simulator",
          "vendor": "Fuji Electric",
          "versions": [
            {
              "lessThan": "4.0.12.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "ics-cert@hq.dhs.gov"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:fujielectric:v-server:*:*:*:*:lite:*:*:*",
              "matchCriteriaId": "BDE5CC23-7376-4E69-988E-42719159E52C",
              "versionEndExcluding": "4.0.12.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:fujielectric:v-simulator:*:*:*:*:lite:*:*:*",
              "matchCriteriaId": "1A6F4C85-64D7-4F4A-8652-5D4B6F8E6914",
              "versionEndExcluding": "4.0.12.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Fuji Electric V-Server Lite and Tellus Lite V-Simulator prior to v4.0.12.0 is vulnerable to an out-of-bounds read, which may allow an attacker to read sensitive information from other memory locations or cause a crash."
    },
    {
      "lang": "es",
      "value": "Fuji Electric V-Server Lite y Tellus Lite V-Simulator versiones anteriores a 4.0.12.0, son vulnerables a una lectura fuera de l\u00edmites, lo que puede permitir a un atacante leer informaci\u00f3n confidencial de otras ubicaciones de memoria o causar un bloqueo"
    }
  ],
  "id": "CVE-2021-38421",
  "lastModified": "2026-06-17T04:02:03.993",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "ics-cert@hq.dhs.gov",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-12-20T21:15:08.613",
  "references": [
    {
      "source": "ics-cert@hq.dhs.gov",
      "tags": [
        "Patch",
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-299-01"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-299-01"
    }
  ],
  "sourceIdentifier": "ics-cert@hq.dhs.gov",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "ics-cert@hq.dhs.gov",
      "type": "Secondary"
    }
  ]
}

CVE-2021-38421 (GCVE-0-2021-38421)

Vulnerability from cvelistv5 – Published: 2021-12-20 20:08 – Updated: 2024-08-04 01:44

Title

Fuji Electric Tellus Lite V-Simulator out of bounds read

Summary

Severity

7.8 (High)


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

CWE

CWE-125 - Out-of-bounds Read

Assigner

icscert icscert root

References

1 reference

URL	Tags
https://www.cisa.gov/uscert/ics/advisories/icsa-2…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
Fuji Electric	V-Server Lite	Affected: unspecified , < 4.0.12.0 (custom)
Fuji Electric	Tellus Lite V-Simulator	Affected: unspecified , < 4.0.12.0 (custom)

Credits

kimiya, working with Trend Micro’s Zero Day Initiative, and Michael Heinzl reported these vulnerabilities to CISA.

Show details on NVD website

JSON

To clipboard

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        {
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      "solutions": [
        {
          "lang": "en",
          "value": "Fuji Electric recommends updating software to the latest version:\nTELLUS Lite software: Version 4.0.12.0 Disk1\nTELLUS Lite software: Version 4.0.12.0 Disk2\nV-Server Lite software: Version 4.0.12.0 Disk1\nV-Server Lite software: Version 4.0.12.0 Disk2"
        }
      ],
      "source": {
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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.