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CVE-2021-27458

Estado: ModificadaAlta (7.5)—

If Ethernet communication of the JTEKT Corporation TOYOPUC product series’ (TOYOPUC-PC10 Series: PC10G-CPU TCC-6353: All versions, PC10GE TCC-6464: All versions, PC10P TCC-6372: All versions, PC10P-DP TCC-6726: All versions, PC10P-DP-IO TCC-6752: All versions, PC10B-P TCC-6373: All versions, PC10B TCC-1021: All versions, PC10B-E/C TCU-6521: All versions, PC10E TCC-4737: All versions; TOYOPUC-Plus Series: Plus CPU TCC-6740: All versions, Plus EX TCU-6741: All versions, Plus EX2 TCU-6858: All versions, Plus EFR TCU-6743: All versions, Plus EFR2 TCU-6859: All versions, Plus 2P-EFR TCU-6929: All versions, Plus BUS-EX TCU-6900: All versions; TOYOPUC-PC3J/PC2J Series: FL/ET-T-V2H THU-6289: All versions, 2PORT-EFR THU-6404: All versions) are left in an open state by an attacker, Ethernet communications cannot be established with other devices, depending on the settings of the link parameters.

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 (18)

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-27458",
  "cveTags": [],
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 3.9
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  "affected": [
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      "source": "ics-cert@hq.dhs.gov",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "JTEKT Corporation TOYOPUC products",
          "versions": [
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              "status": "affected",
              "version": "TOYOPUC-PC10 Series: PC10G-CPU TCC-6353: All versions, PC10GE TCC-6464: All versions, PC10P TCC-6372: All versions, PC10P-DP TCC-6726: All versions, PC10P-DP-IO TCC-6752: All versions, PC10B-P TCC-6373: All versions, PC10B TCC-1021: All versions, PC10B-E/C TCU-6521: All versions, PC10E TCC-4737: All versions"
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  "published": "2021-04-19T22:15:12.967",
  "references": [
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      "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-103-03",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
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      "source": "ics-cert@hq.dhs.gov"
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    {
      "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-103-03",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "ics-cert@hq.dhs.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-404"
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      "lang": "en",
      "value": "If Ethernet communication of the JTEKT Corporation TOYOPUC product series’ (TOYOPUC-PC10 Series: PC10G-CPU TCC-6353: All versions, PC10GE TCC-6464: All versions, PC10P TCC-6372: All versions, PC10P-DP TCC-6726: All versions, PC10P-DP-IO TCC-6752: All versions, PC10B-P TCC-6373: All versions, PC10B TCC-1021: All versions, PC10B-E/C TCU-6521: All versions, PC10E TCC-4737: All versions; TOYOPUC-Plus Series: Plus CPU TCC-6740: All versions, Plus EX TCU-6741: All versions, Plus EX2 TCU-6858: All versions, Plus EFR TCU-6743: All versions, Plus EFR2 TCU-6859: All versions, Plus 2P-EFR TCU-6929: All versions, Plus BUS-EX TCU-6900: All versions; TOYOPUC-PC3J/PC2J Series: FL/ET-T-V2H THU-6289: All versions, 2PORT-EFR THU-6404: All versions) are left in an open state by an attacker, Ethernet communications cannot be established with other devices, depending on the settings of the link parameters."
    },
    {
      "lang": "es",
      "value": "Si la comunicación Ethernet de la serie de productos TOYOPUC de JTEKT Corporation\" (Serie TOYOPUC-PC10: PC10G-CPU TCC-6353: Todas las versiones, PC10GE TCC-6464: Todas las versiones, PC10P TCC-6372: Todas las versiones, PC10P-DP TCC-6726: Todas las versiones, PC10P-DP-IO TCC-6752: Todas las versiones, PC10B-P TCC-6373: Todas las versiones, PC10B TCC-1021: Todas las versiones, PC10B-E/C TCU-6521: Todas las versiones, PC10E TCC-4737: Todas las versiones; Serie TOYOPUC-Plus: Plus CPU TCC-6740: Todas las versiones, Plus EX TCU-6741: Todas las versiones, Plus EX2 TCU-6858: Todas las versiones, Plus EFR TCU-6743: Todas las versiones, Plus EFR2 TCU-6859: Todas las versiones, Plus 2P-EFR TCU-6929: Todas las versiones, Plus BUS-EX TCU-6900: Todas las versiones; Serie TOYOPUC-PC3J/PC2J: FL/ET-T-V2H THU-6289: Todas las versiones, 2PORT-EFR THU-6404: Todas las versiones) son dejadas en estado abierto por un atacante, las comunicaciones Ethernet no pueden ser establecidas con otros dispositivos, dependiendo de la configuración de los parámetros del enlace"
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  ],
  "lastModified": "2026-06-17T03:44:54.073",
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