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CVE-2021-26252

Estado: ModificadaAlta (7.8)—

A flaw was found in htmldoc in v1.9.12. Heap buffer overflow in pspdf_prepare_page(),in ps-pdf.cxx may lead to execute arbitrary code and denial of service.

CVSS

Probabilidad de explotación (EPSS)

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 (3)

Fedoraproject — FedoraHtmldoc Project — HtmldocRedhat — Enterprise Linux

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-26252",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
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        "obtainOtherPrivilege": false,
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          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 1.8
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  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "htmldoc",
          "versions": [
            {
              "status": "affected",
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  "published": "2022-02-24T19:15:09.007",
  "references": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1967009",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
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    },
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      "tags": [
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
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      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
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          "lang": "en",
          "value": "CWE-787"
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    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
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      ]
    }
  ],
  "descriptions": [
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      "lang": "en",
      "value": "A flaw was found in htmldoc in v1.9.12. Heap buffer overflow in pspdf_prepare_page(),in ps-pdf.cxx may lead to execute arbitrary code and denial of service."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un fallo en htmldoc en versión 1.9.12. Un desbordamiento del búfer de la pila en la función pspdf_prepare_page(), en el archivo ps-pdf.cxx puede conllevar a una ejecución de código arbitrario y una denegación de servicio"
    }
  ],
  "lastModified": "2026-06-17T03:43:00.483",
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