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CVE-2021-27421

Estado: ModificadaCrítica (9.8)—

NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to integer overflow in SDK_Malloc function, which could allow to access memory locations outside the bounds of a specified array, leading to unexpected behavior such segmentation fault when assigning a particular block of memory from the heap via malloc.

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 (1)

NXP — Mcuxpresso Software Development KIT

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-27421",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-27421",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-16T15:57:09.567914Z"
        }
      }
    ],
    "cvssMetricV2": [
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        "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": [
      {
        "type": "Secondary",
        "source": "ics-cert@hq.dhs.gov",
        "cvssData": {
          "scope": "UNCHANGED",
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
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        "impactScore": 3.4,
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  "affected": [
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      "affectedData": [
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          "vendor": "NXP",
          "product": "MCUXpresso SDK",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "2.8.2",
              "versionType": "custom"
            }
          ]
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  ],
  "published": "2022-05-03T21:15:08.307",
  "references": [
    {
      "url": "https://mcuxpresso.nxp.com/en/welcome",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "source": "ics-cert@hq.dhs.gov"
    },
    {
      "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04",
      "tags": [
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        "US Government Resource"
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      "source": "ics-cert@hq.dhs.gov"
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    {
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      "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-190"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to integer overflow in SDK_Malloc function, which could allow to access memory locations outside the bounds of a specified array, leading to unexpected behavior such segmentation fault when assigning a particular block of memory from the heap via malloc."
    },
    {
      "lang": "es",
      "value": "NXP MCUXpresso SDK versiones anteriores a 2.8.2, son vulnerables a un desbordamiento de enteros en la función SDK_Malloc, que podría permitir el acceso a ubicaciones de memoria fuera de los límites de una matriz especificada, conllevando a un comportamiento no esperado, como un fallo de segmentación, cuando es asignado un bloque concreto de memoria de la pila por medio de malloc"
    }
  ],
  "lastModified": "2026-06-17T03:44:49.660",
  "configurations": [
    {
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              "versionEndExcluding": "2.8.2"
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  ],
  "sourceIdentifier": "ics-cert@hq.dhs.gov"
}