CVE-2024-40803

Status: ModifiedHigh (7.5)—

A type confusion issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.7.6, macOS Sonoma 14.6, macOS Ventura 13.6.8. An attacker may be able to cause unexpected app termination.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base score: 7.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 1.22%
Percentile among all scored CVEs: 68
Score date: 10/9/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Apple — Macos

CWEs

CWE-843
CWE-843

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2024-40803",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-40803",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-03-26T16:16:08.853836Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "nvd@nist.gov",
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          "attackVector": "NETWORK",
          "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",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      },
      {
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "product-security@apple.com",
      "affectedData": [
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          "vendor": "Apple",
          "product": "macOS",
          "versions": [
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  "published": "2024-07-29T23:15:12.873",
  "references": [
    {
      "url": "https://support.apple.com/en-us/120910",
      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/en-us/120911",
      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/en-us/120912",
      "source": "product-security@apple.com"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2024/Jul/18",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-843"
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    {
      "type": "Secondary",
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      "description": [
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          "lang": "en",
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A type confusion issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.7.6, macOS Sonoma 14.6, macOS Ventura 13.6.8. An attacker may be able to cause unexpected app termination."
    },
    {
      "lang": "es",
      "value": " Se solucionó un problema de confusión de tipos con comprobaciones mejoradas. Este problema se solucionó en macOS Sonoma 14.6, macOS Monterey 12.7.6, macOS Ventura 13.6.8. Un atacante puede provocar la finalización inesperada de la aplicación."
    }
  ],
  "lastModified": "2026-06-17T07:46:36.633",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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              "versionEndExcluding": "12.7.6"
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          "operator": "OR"
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  "sourceIdentifier": "product-security@apple.com"
}