CVE-2026-21427

Estado: AplazadaAlta (8.5)—

The installers for multiple products provided by PIONEER CORPORATION contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries. As a result, arbitrary code may be executed with the privileges of the running installer.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 8.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 7
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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1203 Exploitation for Client Executionexecution85 %
Impacto principalT1574.007 Path Interception by PATH Environment Variablestealth · execution90 %
Impacto secundarioT1068 Exploitation for Privilege Escalationprivilege escalation75 %

Instalador local con interacción del usuario (UI:P). DLL search path inseguro permite cargar bibliotecas maliciosas. Ejecución con privilegios del instalador (VC:H/VI:H/VA:H sugiere elevación a nivel admin/sistema).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software Threat Intelligence Program Restrict File and Directory Permissions

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Pioneer Corporation — Installer^AI

CWE

CWE-427

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-21427",
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      "tags": [
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      ],
      "sourceIdentifier": "vultures@jpcert.or.jp"
    }
  ],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-21427",
          "role": "CISA Coordinator",
          "options": [
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            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-08T15:52:49.936381Z"
        }
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          "confidentialityImpact": "HIGH"
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      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "vultures@jpcert.or.jp",
        "cvssData": {
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          "version": "4.0",
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          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
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          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  },
  "affected": [
    {
      "source": "vultures@jpcert.or.jp",
      "affectedData": [
        {
          "vendor": "PIONEER CORPORATION",
          "product": "USB DAC Amplifier APS-DA101JS",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "USB DAC Amplifier APS-DA101JR",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "USB DAC Amplifier APS-DA101JGL",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "USB DAC Amplifier APS-DA101JGR",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "Stellanova Lite APS-S201JS",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "Stellanova Lite APS-S201JR",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "Stellanova Lite APS-S201JGL",
          "versions": [
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              "status": "affected",
              "version": "all versions"
            }
          ]
        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "Stellanova Lite APS-S201JGR",
          "versions": [
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              "version": "all versions"
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        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "Stellanova Limited APS-S202J-LM",
          "versions": [
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              "status": "affected",
              "version": "all versions"
            }
          ]
        },
        {
          "vendor": "PIONEER CORPORATION",
          "product": "Stellanova APS-S301 series",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-01-08T04:15:56.690",
  "references": [
    {
      "url": "https://jpn.pioneer/ja/support/software/stellanova/dac_driver/",
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://jvn.jp/en/jp/JVN17956874/",
      "source": "vultures@jpcert.or.jp"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "vultures@jpcert.or.jp",
      "description": [
        {
          "lang": "en",
          "value": "CWE-427"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The installers for multiple products provided by PIONEER CORPORATION contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries. As a result,  arbitrary code may be executed with the privileges of the running installer."
    },
    {
      "lang": "es",
      "value": "Los instaladores para múltiples productos proporcionados por PIONEER CORPORATION contienen un problema con la ruta de búsqueda de DLL, lo que puede llevar a la carga insegura de Bibliotecas de Enlace Dinámico. Como resultado, código arbitrario puede ser ejecutado con los privilegios del instalador en ejecución."
    }
  ],
  "lastModified": "2026-06-17T10:18:39.023",
  "sourceIdentifier": "vultures@jpcert.or.jp"
}