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CVE-2021-27387

Estado: ModificadaAlta (7.8)—

A vulnerability has been identified in Simcenter Femap 2020.2 (All versions < V2020.2.MP3), Simcenter Femap 2021.1 (All versions < V2021.1.MP3). The femap.exe application lacks proper validation of user-supplied data when parsing FEMAP files. This could result in an out of bounds write past the end of an allocated structure, a different vulnerability than CVE-2021-27399. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-12819)

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 (1)

Siemens — Simcenter Femap

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-27387",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "productcert@siemens.com",
      "affectedData": [
        {
          "vendor": "Siemens",
          "product": "Simcenter Femap 2020.2",
          "versions": [
            {
              "status": "affected",
              "version": "All versions < V2020.2.MP3"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "Simcenter Femap 2021.1",
          "versions": [
            {
              "status": "affected",
              "version": "All versions < V2021.1.MP3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-08T20:15:08.647",
  "references": [
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-133038.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "productcert@siemens.com"
    },
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-780/",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "productcert@siemens.com"
    },
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-133038.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-780/",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "productcert@siemens.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been identified in Simcenter Femap 2020.2 (All versions < V2020.2.MP3), Simcenter Femap 2021.1 (All versions < V2021.1.MP3). The femap.exe application lacks proper validation of user-supplied data when parsing FEMAP files. This could result in an out of bounds write past the end of an allocated structure, a different vulnerability than CVE-2021-27399. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-12819)"
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad en Simcenter Femap versiones 2020.2 (Todas las versiones anteriores a V2020.2.MP3), Simcenter Femap versiones 2021.1 (Todas las versiones anteriores a V2021.1.MP3). La aplicación femap.exe carece de una comprobación apropiada de los datos suministrados por el usuario cuando se analizan los archivos FEMAP. Esto podría resultar en una escritura fuera de límites más allá del final de una estructura asignada, una vulnerabilidad diferente a la CVE-2021-27399. Un atacante podría aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual. (ZDI-CAN-12819)"
    }
  ],
  "lastModified": "2026-06-17T03:44:45.903",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:siemens:simcenter_femap:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6B8795C1-B38E-4D4C-B472-D5BD7A812076",
              "versionEndExcluding": "2020.2"
            },
            {
              "criteria": "cpe:2.3:a:siemens:simcenter_femap:2020.2:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "45178A46-1DB7-429A-8518-5D75669B4419"
            },
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            },
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              "vulnerable": true,
              "matchCriteriaId": "7D862ED6-5E39-464B-ABC2-17846494BB52"
            },
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              "criteria": "cpe:2.3:a:siemens:simcenter_femap:2021.1:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3DFF7E60-6EBE-410E-8C81-1E98A1C07AAD"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "19EEE97B-B2AD-4655-AE1C-5AD9717DE613"
            },
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              "vulnerable": true,
              "matchCriteriaId": "DE6A20BD-A2D9-490D-A11F-862012BBF50C"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "productcert@siemens.com"
}