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CVE-2021-21987

Estado: ModificadaMedia (6.5)—

VMware Workstation (16.x prior to 16.1.2) and Horizon Client for Windows (5.x prior to 5.5.2) contain out-of-bounds read vulnerability in the Cortado ThinPrint component (TTC Parser). A malicious actor with access to a virtual machine or remote desktop may be able to exploit these issues leading to information disclosure from the TPView process running on the system where Workstation or Horizon Client for Windows is installed.

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 (2)

Vmware — Horizon ClientVmware — Workstation

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-21987",
  "cveTags": [],
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
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          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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  "affected": [
    {
      "source": "security@vmware.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "VMware Workstation Pro / Player (Workstation), VMware Horizon Client for Windows",
          "versions": [
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  "published": "2021-05-24T12:15:07.530",
  "references": [
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      "tags": [
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      "source": "security@vmware.com"
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      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-608/",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
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  "descriptions": [
    {
      "lang": "en",
      "value": "VMware Workstation (16.x prior to 16.1.2) and Horizon Client for Windows (5.x prior to 5.5.2) contain out-of-bounds read vulnerability in the Cortado ThinPrint component (TTC Parser). A malicious actor with access to a virtual machine or remote desktop may be able to exploit these issues leading to information disclosure from the TPView process running on the system where Workstation or Horizon Client for Windows is installed."
    },
    {
      "lang": "es",
      "value": "VMware Workstation (16.x versiones anteriores a 16.1.2) y Horizon Client para Windows (5.x versiones anteriores a 5.5.2) contienen una vulnerabilidad de lectura fuera de límites en el componente Cortado ThinPrint (TTC Parser). Un actor malicioso con acceso a una máquina virtual o escritorio remoto puede explotar estos problemas que conllevan a la divulgación de información del proceso TPView que se ejecuta en el sistema donde está instalado Workstation o Horizon Client para Windows"
    }
  ],
  "lastModified": "2026-06-17T03:36:30.527",
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