CVE-2007-4730

Estado: ModificadaMedia (4.3)—
Buffer overflow in the compNewPixmap function in compalloc.c in the Composite extension for the X.org X11 server before 1.4 allows local users to execute arbitrary code by copying data from a large pixel depth pixmap into a smaller pixel depth pixmap.
CVSS

Versión: 2.0
Vector: AV:L/AC:L/Au:S/C:P/I:P/A:P
Puntuación base: 4.3
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.51%
Percentil entre todas las CVEs puntuadas: 42
Fecha de la puntuación: 6/10/2026
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)

X.org — Xorg-server
CWE

CWE-119
Referencias

JSON original (NVD)

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{
  "id": "CVE-2007-4730",
  "cveTags": [],
  "metrics": {
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      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.1,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": true,
        "userInteractionRequired": false
      }
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  },
  "affected": [
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      "affectedData": [
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          "versions": [
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              "status": "affected",
              "version": "n/a"
            }
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  ],
  "published": "2007-09-11T19:17:00.000",
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow in the compNewPixmap function in compalloc.c in the Composite extension for the X.org X11 server before 1.4 allows local users to execute arbitrary code by copying data from a large pixel depth pixmap into a smaller pixel depth pixmap."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de búfer en la función compNewPixmap de compalloc.c en la extensión Composite para el servidor X11 X.org anterior a 1.4 permite a usuarios locales ejecutar código de su elección copiando datos de un mapa de píxeles con gran profundidad de píxel (pixel depth) a un mapa con profundidad menor."
    }
  ],
  "lastModified": "2026-06-16T22:44:39.980",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:x.org:xorg-server:1.01:*:*:*:*:*:*:*",
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          "operator": "OR"
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  ],
  "vendorComments": [
    {
      "comment": "This flaw was fixed for Red Hat Enterprise Linux 4 in RHSA-2007-0898:\nhttps://rhn.redhat.com/errata/RHSA-2007-0898.html\n\nRed Hat Enterprise Linux 5 is not affected by this flaw.  More information can be found here:\nhttps://bugzilla.redhat.com/show_bug.cgi?id=285991\n\nRed Hat Enterprise Linux 2.1 and 3 do not support the composite extension and are not vulnerable to this flaw.",
      "lastModified": "2007-09-26T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}