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CVE-2021-27395

Estado: ModificadaAlta (8.1)—

A vulnerability has been identified in SIMATIC Process Historian 2013 and earlier (All versions), SIMATIC Process Historian 2014 (All versions < SP3 Update 6), SIMATIC Process Historian 2019 (All versions), SIMATIC Process Historian 2020 (All versions). An interface in the software that is used for critical functionalities lacks authentication, which could allow a malicious user to maliciously insert, modify or delete data.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (4)

Siemens — Simatic Process Historian 2013Siemens — Simatic Process Historian 2014Siemens — Simatic Process Historian 2019Siemens — Simatic Process Historian 2020

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-27395",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "productcert@siemens.com",
      "affectedData": [
        {
          "vendor": "Siemens",
          "product": "SIMATIC Process Historian 2013 and earlier",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "SIMATIC Process Historian 2014",
          "versions": [
            {
              "status": "affected",
              "version": "All versions < SP3 Update 6"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "SIMATIC Process Historian 2019",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "SIMATIC Process Historian 2020",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-10-12T10:15:11.493",
  "references": [
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-766247.pdf",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "productcert@siemens.com"
    },
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-766247.pdf",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "productcert@siemens.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been identified in SIMATIC Process Historian 2013 and earlier (All versions), SIMATIC Process Historian 2014 (All versions < SP3 Update 6), SIMATIC Process Historian 2019 (All versions), SIMATIC Process Historian 2020 (All versions). An interface in the software that is used for critical functionalities lacks authentication, which could allow a malicious user to maliciously insert, modify or delete data."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad en SIMATIC Process Historian 2013 y anteriores (Todas las versiones), SIMATIC Process Historian 2014 (Todas las versiones anteriores a SP3 Update 6), SIMATIC Process Historian 2019 (Todas las versiones), SIMATIC Process Historian 2020 (Todas las versiones). Una interfaz en el software que es usada para funcionalidades críticas carece de autenticación, lo que podría permitir a un usuario malicioso insertar, modificar o eliminar datos de forma maliciosa"
    }
  ],
  "lastModified": "2026-06-17T03:44:46.843",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:siemens:simatic_process_historian_2013:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "78883EE0-420B-49C6-B8C6-64915216504E"
            },
            {
              "criteria": "cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0D802BDB-8F9C-481E-A152-CAF4347C8B3B"
            },
            {
              "criteria": "cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FEBF81AD-7354-4CD5-89A4-0088F6C00721"
            },
            {
              "criteria": "cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DA9B2CB2-5D15-4470-9DBC-E168F12F3880"
            },
            {
              "criteria": "cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp3_update4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "98216800-858E-4C6E-B086-0F5E56888C9C"
            },
            {
              "criteria": "cpe:2.3:a:siemens:simatic_process_historian_2019:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "81E1CC4F-602E-4DF8-9B4F-E52AF18C9B07"
            },
            {
              "criteria": "cpe:2.3:a:siemens:simatic_process_historian_2020:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E89C6F2E-C7A9-4ACE-9247-4CE06BE90C53"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "productcert@siemens.com"
}