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CVE-2023-39501

Status: AnalyzedHigh (7.8)—

PDF-XChange Editor OXPS File Parsing Untrusted Pointer Dereference Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of OXPS files. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20034.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Pdf-xchange — Pdf-toolsPdf-xchange — Pdf-xchange Editor

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2023-39501",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2023-39501",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          ],
          "version": "2.0.3",
          "timestamp": "2024-05-15T18:12:53.038504Z"
        }
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    "cvssMetricV30": [
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        "type": "Secondary",
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          "version": "3.0",
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
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    "cvssMetricV31": [
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          "product": "PDF-XChange Editor",
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  "published": "2024-05-03T03:15:17.960",
  "references": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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          "value": "CWE-822"
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    {
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-Other"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "PDF-XChange Editor OXPS File Parsing Untrusted Pointer Dereference Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of OXPS files. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20034."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de ejecución remota de código de eliminación de referencia de puntero no confiable en el análisis de archivos OXPS del editor PDF-XChange. Esta vulnerabilidad permite a atacantes remotos ejecutar código arbitrario en instalaciones afectadas de PDF-XChange Editor. Se requiere la interacción del usuario para aprovechar esta vulnerabilidad, ya que el objetivo debe visitar una página maliciosa o abrir un archivo malicioso. La falla específica existe en el análisis de archivos OXPS. El problema se debe a la falta de validación adecuada de un valor proporcionado por el usuario antes de eliminar la referencia a él como puntero. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual. Era ZDI-CAN-20034."
    }
  ],
  "lastModified": "2026-06-17T06:12:27.953",
  "configurations": [
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  "sourceIdentifier": "zdi-disclosures@trendmicro.com"
}