CVE-2023-42866
Status: ModifiedHigh (8.8)—
The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, tvOS 16.6, Safari 16.6, watchOS 9.6. 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: 0.76%
- Percentile among all scored CVEs: 54
- 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)
CWEs
- NVD-CWE-noinfo
References
- https://support.apple.com/en-us/HT213841
- https://support.apple.com/en-us/HT213843
- https://support.apple.com/en-us/HT213846
- https://support.apple.com/en-us/HT213847
- https://support.apple.com/en-us/HT213848
- https://support.apple.com/en-us/HT213841
- https://support.apple.com/en-us/HT213843
- https://support.apple.com/en-us/HT213846
- https://support.apple.com/en-us/HT213847
- https://support.apple.com/en-us/HT213848
Raw JSON (NVD)
Show
{
"id": "CVE-2023-42866",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-42866",
"role": "CISA Coordinator",
"options": [
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"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-05-08T17:31:09.235037Z"
}
}
],
"cvssMetricV31": [
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"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.8
},
{
"type": "Secondary",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
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"availabilityImpact": "HIGH",
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},
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}
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},
"affected": [
{
"source": "product-security@apple.com",
"affectedData": [
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{
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{
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}
],
"published": "2024-01-10T22:15:50.143",
"references": [
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"tags": [
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{
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],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, tvOS 16.6, Safari 16.6, watchOS 9.6. 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 macOS Ventura 13.5, iOS 16.6 y iPadOS 16.6, tvOS 16.6, Safari 16.6, watchOS 9.6. El procesamiento de contenido web puede dar lugar a la ejecución de código arbitrario."
}
],
"lastModified": "2026-06-17T06:24:42.353",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"vulnerable": true,
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"versionEndExcluding": "16.6"
},
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"operator": "OR"
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],
"sourceIdentifier": "product-security@apple.com"
}