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CVE-2019-10991

Status: ModifiedCritical (9.8)—

In WebAccess/SCADA, Versions 8.3.5 and prior, multiple stack-based buffer overflow vulnerabilities are caused by a lack of proper validation of the length of user-supplied data. Exploitation of these vulnerabilities may allow remote code execution.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Advantech — Webaccess

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2019-10991",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "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
      }
    ],
    "cvssMetricV31": [
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        "type": "Primary",
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          "scope": "UNCHANGED",
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "ics-cert@hq.dhs.gov",
      "affectedData": [
        {
          "vendor": "WebAccess",
          "product": "WebAccess/SCADA",
          "versions": [
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  ],
  "published": "2019-06-28T21:15:11.307",
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    {
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    },
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    },
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      "tags": [
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        "VDB Entry"
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    },
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-19-619/",
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        "VDB Entry"
      ],
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    },
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-19-620/",
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        "VDB Entry"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In WebAccess/SCADA, Versions 8.3.5 and prior, multiple stack-based buffer overflow vulnerabilities are caused by a lack of proper validation of the length of user-supplied data. Exploitation of these vulnerabilities may allow remote code execution."
    },
    {
      "lang": "es",
      "value": "En WebAccess/SCADA, versiones 8.3.5 y anteriores, múltiples vulnerabilidades de desbordamiento de búfer basado en pila son provocadas por la falta de una validación correcta de la longitud de los datos proporcionados. La explotación de estas vulnerabilidades podrían permitir la ejecución remota de código."
    }
  ],
  "lastModified": "2026-06-17T02:12:04.357",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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              "vulnerable": true,
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              "versionEndIncluding": "8.3.5"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "ics-cert@hq.dhs.gov"
}