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CVE-2019-3940

Estado: ModificadaCrítica (9.8)—

Advantech WebAccess 8.3.4 is vulnerable to file upload attacks via unauthenticated RPC call. An unauthenticated, remote attacker can use this vulnerability to execute arbitrary code.

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)

Advantech — Webaccess

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-3940",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 3.9
      }
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  },
  "affected": [
    {
      "source": "vulnreport@tenable.com",
      "affectedData": [
        {
          "vendor": "Advantech",
          "product": "WebAccess",
          "versions": [
            {
              "status": "affected",
              "version": "8.3.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-04-09T16:29:02.100",
  "references": [
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      "url": "http://www.securityfocus.com/bid/107847",
      "tags": [
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        "VDB Entry"
      ],
      "source": "vulnreport@tenable.com"
    },
    {
      "url": "https://www.tenable.com/security/research/tra-2019-15",
      "tags": [
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    },
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        "VDB Entry"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "vulnreport@tenable.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-434"
        }
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Advantech WebAccess 8.3.4 is vulnerable to file upload attacks via unauthenticated RPC call. An unauthenticated, remote attacker can use this vulnerability to execute arbitrary code."
    },
    {
      "lang": "es",
      "value": "Advantech WebAccess versión 8.3.4 es vulnerable a ataques de carga de archivos por medio de una llamada RPC no autenticada. Un atacante remoto no autenticado puede usar esta vulnerabilidad para ejecutar código arbitrario."
    }
  ],
  "lastModified": "2026-06-17T02:35:55.473",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:advantech:webaccess:8.3.4:*:*:*:*:*:*:*",
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              "matchCriteriaId": "E182AC38-8CB4-466C-ACAB-BFD7ECCEADF9"
            }
          ],
          "operator": "OR"
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  "sourceIdentifier": "vulnreport@tenable.com"
}