CVE-2023-40447

Status: ModifiedHigh (8.8)—
The issue was addressed with improved memory handling. This issue is fixed in iOS 17.1 and iPadOS 17.1, watchOS 10.1, iOS 16.7.2 and iPadOS 16.7.2, macOS Sonoma 14.1, Safari 17.1, tvOS 17.1. Processing web content may lead to arbitrary code execution.
CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base score: 8.8
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 1.52%
Percentile among all scored CVEs: 74
Score date: 10/7/2026
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 (6)

Apple — Ipados Apple — Iphone OS Apple — Macos Apple — Safari Apple — Tvos Apple — Watchos
CWEs

CWE-119
References

Raw JSON (NVD)

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{
  "id": "CVE-2023-40447",
  "cveTags": [],
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 2.8
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  "published": "2023-10-25T19:15:09.657",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
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  "descriptions": [
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      "lang": "en",
      "value": "The issue was addressed with improved memory handling. This issue is fixed in iOS 17.1 and iPadOS 17.1, watchOS 10.1, iOS 16.7.2 and iPadOS 16.7.2, macOS Sonoma 14.1, Safari 17.1, tvOS 17.1. Processing web content may lead to arbitrary code execution."
    },
    {
      "lang": "es",
      "value": "El problema se solucionó mejorando el manejo de la memoria. Este problema se solucionó en iOS 17.1 y iPadOS 17.1, watchOS 10.1, iOS 16.7.2 y iPadOS 16.7.2, macOS Sonoma 14.1, Safari 17.1, tvOS 17.1. El procesamiento de contenido web puede dar lugar a la ejecución de código arbitrario."
    }
  ],
  "lastModified": "2026-06-17T06:17:53.253",
  "configurations": [
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