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CVE-2021-22156

Estado: ModificadaCrítica (9.8)—

An integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software Development Platform (SDP) version(s) 6.5.0SP1 and earlier, QNX OS for Medical 1.1 and earlier, and QNX OS for Safety 1.0.1 and earlier that could allow an attacker to potentially perform a denial of service or execute arbitrary code.

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 (3)

Blackberry — QNX OS FOR MedicalBlackberry — QNX OS FOR SafetyBlackberry — QNX Software Development Platform

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-22156",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "secure@blackberry.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 9,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2.2
      },
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 3.9
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  "affected": [
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      "affectedData": [
        {
          "vendor": "BlackBerry",
          "product": "QNX Software Development Platform (SDP), QNX OS for Medical and QNX OS for Safety",
          "versions": [
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              "status": "affected",
              "version": "QNX SDP 6.5.0 SP1 and earlier"
            },
            {
              "status": "affected",
              "version": "QNX OS for Medical 1.1 and earlier"
            },
            {
              "status": "affected",
              "version": "QNX OS for Safety 1.0.1 and earlier"
            }
          ],
          "defaultStatus": "unaffected"
        }
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  ],
  "published": "2021-08-17T19:15:08.057",
  "references": [
    {
      "url": "https://support.blackberry.com/kb/articleDetail?articleNumber=000082334",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@blackberry.com"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxjVPdL",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "secure@blackberry.com"
    },
    {
      "url": "https://support.blackberry.com/kb/articleDetail?articleNumber=000082334",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxjVPdL",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@blackberry.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software Development Platform (SDP) version(s) 6.5.0SP1 and earlier, QNX OS for Medical 1.1 and earlier, and QNX OS for Safety 1.0.1 and earlier that could allow an attacker to potentially perform a denial of service or execute arbitrary code."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de desbordamiento de enteros en la función calloc() de la biblioteca de tiempo de ejecución C de las versiones afectadas de BlackBerry® QNX Software Development Platform (SDP) versión(es) 6.5.0SP1 y anteriores, QNX OS for Medical versiones 1.1 y anteriores, y QNX OS for Safety versiones 1.0.1 y anteriores, que podría permitir a un atacante llevar a cabo potencialmente una denegación de servicio o ejecutar código arbitrario."
    }
  ],
  "lastModified": "2026-06-17T03:36:42.910",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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  "sourceIdentifier": "secure@blackberry.com"
}