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CVE-2021-26621

Estado: ModificadaCrítica (9.8)—
Gravedad9.8Crítica · CVSS 3.1
Probabilidad de explotación1.74 %mayor que el 77 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado

Se ha detectado una vulnerabilidad de desbordamiento de búfer conllevando a una ejecución de código remota en MEX01. Los atacantes remotos pueden usar esta vulnerabilidad al usar la propiedad de que el programa de destino copie los valores de los parámetros a la memoria mediante la función strcpy()

CVSS

Puntuación base
9.8
Versión
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
1.74 %
Percentil entre todas las CVEs puntuadas
77
Fecha de la puntuación
21/10/2026

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).

Tecnologías afectadas (1)

Netu — Mex01 Firmware

CWE

Referencias

Mostrar las 2 referencias

JSON original (NVD)

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{
  "id": "CVE-2021-26621",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
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          "baseScore": 8.1,
          "attackVector": "NETWORK",
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          "userInteraction": "NONE",
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  "affected": [
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        {
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          "product": "MEX01",
          "versions": [
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              "version": "unspecified",
              "versionType": "custom",
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          "platforms": [
            "Windows, Mac OS and etc."
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  ],
  "published": "2022-03-25T19:15:08.770",
  "references": [
    {
      "url": "https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66579",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "vuln@krcert.or.kr"
    },
    {
      "url": "https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66579",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "vuln@krcert.or.kr",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Buffer Overflow vulnerability leading to remote code execution was discovered in MEX01. Remote attackers can use this vulnerability by using the property that the target program copies parameter values to memory through the strcpy() function."
    },
    {
      "lang": "es",
      "value": "Se ha detectado una vulnerabilidad de desbordamiento de búfer conllevando a una ejecución de código remota en MEX01. Los atacantes remotos pueden usar esta vulnerabilidad al usar la propiedad de que el programa de destino copie los valores de los parámetros a la memoria mediante la función strcpy()"
    }
  ],
  "lastModified": "2026-06-17T03:43:34.780",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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              "versionEndExcluding": "1.9.18"
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      "operator": "AND"
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  ],
  "sourceIdentifier": "vuln@krcert.or.kr"
}