Vulnerability-Lookup

FKIE_CVE-2021-38432

Vulnerability from fkie_nvd - Published: 2021-10-15 15:15 - Updated: 2026-06-17 04:02

Severity

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

Summary

FATEK Automation Communication Server Versions 1.13 and prior lacks proper validation of user-supplied data, which could result in a stack-based buffer overflow condition and allow an attacker to remotely execute code.

References

	URL	Tags
	ics-cert@hq.dhs.gov	https://us-cert.cisa.gov/ics/advisories/icsa-21-280-07	Third Party Advisory, US Government Resource
	af854a3a-2127-422b-91ae-364da2661108	https://us-cert.cisa.gov/ics/advisories/icsa-21-280-07	Third Party Advisory, US Government Resource

Impacted products

	Vendor	Product	Version
	fatek	communication_server_firmware	*
	fatek	communication_server	-

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Communication Server",
          "vendor": "FATEK Automation",
          "versions": [
            {
              "lessThanOrEqual": "1.13",
              "status": "affected",
              "version": "All",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "ics-cert@hq.dhs.gov"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fatek:communication_server_firmware:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "90E03045-6F2B-405C-AB12-1A02024EEE42",
              "versionEndIncluding": "1.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:fatek:communication_server:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "DBE74ACD-F778-4FD2-A340-A25A046F4C4A",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "FATEK Automation Communication Server Versions 1.13 and prior lacks proper validation of user-supplied data, which could result in a stack-based buffer overflow condition and allow an attacker to remotely execute code."
    },
    {
      "lang": "es",
      "value": "FATEK Automation Communication Server versiones anteriores a 1.13, no comprueban correctamente los datos suministrados por el usuario, que podr\u00eda resultar en una condici\u00f3n de desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria y permitir a un atacante ejecutar c\u00f3digo de forma remota"
    }
  ],
  "id": "CVE-2021-38432",
  "lastModified": "2026-06-17T04:02:05.280",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "ics-cert@hq.dhs.gov",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-10-15T15:15:08.390",
  "references": [
    {
      "source": "ics-cert@hq.dhs.gov",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-280-07"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-280-07"
    }
  ],
  "sourceIdentifier": "ics-cert@hq.dhs.gov",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "ics-cert@hq.dhs.gov",
      "type": "Secondary"
    }
  ]
}

CVE-2021-38432 (GCVE-0-2021-38432)

Vulnerability from cvelistv5 – Published: 2021-10-15 14:13 – Updated: 2024-09-16 18:54

Title

FATEK Automation Communication Server

Summary

Severity

9.8 (Critical)


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

CWE

CWE-121 - STACK-BASED BUFFER OVERFLOW CWE-121

Assigner

icscert icscert root

References

1 reference

URL	Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-280-07	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
FATEK Automation	Communication Server	Affected: All , ≤ 1.13 (custom)

Date Public

2021-10-07 00:00

Credits

Natnael Samson (@NattiSamson), working with Trend Micro’s Zero Day Initiative, reported this vulnerability to CISA.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:44:22.258Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
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            "tags": [
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              "x_transferred"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-280-07"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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        {
          "product": "Communication Server",
          "vendor": "FATEK Automation",
          "versions": [
            {
              "lessThanOrEqual": "1.13",
              "status": "affected",
              "version": "All",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Natnael Samson (@NattiSamson), working with Trend Micro\u2019s Zero Day Initiative, reported this vulnerability to CISA."
        }
      ],
      "datePublic": "2021-10-07T00:00:00.000Z",
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
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            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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      "providerMetadata": {
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        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-280-07"
        }
      ],
      "source": {
        "advisory": "ICSA_21-280-07",
        "discovery": "UNKNOWN"
      },
      "title": "FATEK Automation Communication Server",
      "workarounds": [
        {
          "lang": "en",
          "value": "FATEK Automation has not responded to requests to work with CISA to mitigate this vulnerability. Users of these affected products are invited to contact FATEK customer support for additional information."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "ics-cert@hq.dhs.gov",
          "DATE_PUBLIC": "2021-10-07T17:54:00.000Z",
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          "STATE": "PUBLIC",
          "TITLE": "FATEK Automation Communication Server"
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        "affects": {
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              {
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                            "version_name": "All",
                            "version_value": "1.13"
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                },
                "vendor_name": "FATEK Automation"
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          }
        },
        "credit": [
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            "lang": "eng",
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    "datePublished": "2021-10-15T14:13:54.937Z",
    "dateReserved": "2021-08-10T00:00:00.000Z",
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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.