CVE-2020-7450

Estado: ModificadaCrítica (9.8)—

In FreeBSD 12.1-STABLE before r357213, 12.1-RELEASE before 12.1-RELEASE-p2, 12.0-RELEASE before 12.0-RELEASE-p13, 11.3-STABLE before r357214, and 11.3-RELEASE before 11.3-RELEASE-p6, URL handling in libfetch with URLs containing username and/or password components is vulnerable to a heap buffer overflow allowing program misbehavior or malicious code execution.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 9.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.52%
Percentil entre todas las CVEs puntuadas: 84
Fecha de la puntuación: 7/10/2026

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)

Freebsd — Freebsd

CWE

CWE-787

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-7450",
  "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
      }
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          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "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",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
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  },
  "affected": [
    {
      "source": "secteam@freebsd.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "FreeBSD",
          "versions": [
            {
              "status": "affected",
              "version": "12.1-STABLE before r357213"
            },
            {
              "status": "affected",
              "version": "12.1-RELEASE before 12.1-RELEASE-p2"
            },
            {
              "status": "affected",
              "version": "12.0-RELEASE before 12.0-RELEASE-p13"
            },
            {
              "status": "affected",
              "version": "11.3-STABLE before r357214"
            },
            {
              "status": "affected",
              "version": "11.3-RELEASE before 11.3-RELEASE-p6"
            }
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  "published": "2020-02-18T16:15:11.610",
  "references": [
    {
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:01.libfetch.asc",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secteam@freebsd.org"
    },
    {
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:01.libfetch.asc",
      "tags": [
        "Patch",
        "Vendor Advisory"
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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-787"
        }
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  "descriptions": [
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      "lang": "en",
      "value": "In FreeBSD 12.1-STABLE before r357213, 12.1-RELEASE before 12.1-RELEASE-p2, 12.0-RELEASE before 12.0-RELEASE-p13, 11.3-STABLE before r357214, and 11.3-RELEASE before 11.3-RELEASE-p6, URL handling in libfetch with URLs containing username and/or password components is vulnerable to a heap buffer overflow allowing program misbehavior or malicious code execution."
    },
    {
      "lang": "es",
      "value": "En FreeBSD versiones 12.1-STABLE anteriores a r357213, versiones 12.1-RELEASE versiones anteriores a 12.1-RELEASE-p2, versiones 12.0-RELEASE anteriores a 12.0-RELEASE-p13, versiones 11.3-STABLE anteriores a r357214 y versiones 11.3-RELEASE anteriores a 11.3-RELEASE-p6, el manejo de URL en libfetch con URLs que contienen componentes de nombre de usuario y/o contraseña es vulnerable a un desbordamiento del búfer, que permite un comportamiento inapropiado del programa o una ejecución de código malicioso."
    }
  ],
  "lastModified": "2026-06-17T03:24:48.390",
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}