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CVE-2018-20684

Estado: ModificadaAlta (7.5)—
Gravedad7.5Alta · CVSS 3.0
Probabilidad de explotación2.77 %mayor que el 86 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado

En WinSCP, en versiones anteriores a la 5.14 beta, debido a la falta de validación, la implementación de scp aceptaría archivos arbitrarios enviados por el servidor, lo que podría sobrescribir archivos no relacionados. Esto afecta a TSCPFileSystem::SCPSink en core/ScpFileSystem.cpp.

CVSS

Puntuación base
7.5
Versión
3.0
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
2.77 %
Percentil entre todas las CVEs puntuadas
86
Fecha de la puntuación
24/10/2026

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)

Winscp — Winscp

CWE

Referencias

Mostrar las 12 referencias

JSON original (NVD)

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{
  "id": "CVE-2018-20684",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
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        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV30": [
      {
        "type": "Primary",
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        "cvssData": {
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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      "tags": [
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    {
      "url": "https://github.com/winscp/winscp/commit/49d876f2c5fc00bcedaa986a7cf6dedd6bf16f54",
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      "url": "https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt",
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    {
      "url": "https://www.oracle.com/security-alerts/cpujan2020.html",
      "source": "cve@mitre.org"
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In WinSCP before 5.14 beta, due to missing validation, the scp implementation would accept arbitrary files sent by the server, potentially overwriting unrelated files. This affects TSCPFileSystem::SCPSink in core/ScpFileSystem.cpp."
    },
    {
      "lang": "es",
      "value": "En WinSCP, en versiones anteriores a la 5.14 beta, debido a la falta de validación, la implementación de scp aceptaría archivos arbitrarios enviados por el servidor, lo que podría sobrescribir archivos no relacionados. Esto afecta a TSCPFileSystem::SCPSink en core/ScpFileSystem.cpp."
    }
  ],
  "lastModified": "2026-06-17T01:53:19.183",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:winscp:winscp:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "C13D4EFE-E54E-4E74-998E-590660C121CF",
              "versionEndIncluding": "5.13.7"
            }
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          "operator": "OR"
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    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}