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CVE-2018-7542

Estado: ModificadaMedia (6.5)—
Gravedad6.5Media · CVSS 3.0
Probabilidad de explotación0.38 %mayor que el 31 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado

Se ha descubierto un problema en Xen 4.8.x hasta la versión 4.10.x que permite que los usuarios invitados x86 PVH del sistema operativo provoquen una denegación de servicio (desreferencia de puntero NULL y cierre inesperado del hipervisor) aprovechando la gestión incorrecta de configuraciones que carecen de una APIC local.

CVSS

Puntuación base
6.5
Versión
3.0
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
0.38 %
Percentil entre todas las CVEs puntuadas
31
Fecha de la puntuación
20/10/2026

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 (2)

Debian — Debian LinuxXEN — XEN

CWE

Referencias

Mostrar las 8 referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2018-7542",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 4.9,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
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        "obtainAllPrivilege": false,
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    "cvssMetricV30": [
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          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
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  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
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          "versions": [
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  "published": "2018-02-27T19:29:00.700",
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      "url": "http://www.securitytracker.com/id/1040776",
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    },
    {
      "url": "https://security.gentoo.org/glsa/201810-06",
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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-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en Xen 4.8.x hasta la versión 4.10.x que permite que los usuarios invitados x86 PVH del sistema operativo provoquen una denegación de servicio (desreferencia de puntero NULL y cierre inesperado del hipervisor) aprovechando la gestión incorrecta de configuraciones que carecen de una APIC local."
    }
  ],
  "lastModified": "2026-06-17T02:03:20.403",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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              "versionEndIncluding": "4.10.0",
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}