CVE-2024-40856
Status: ModifiedHigh (7.5)—
An integrity issue was addressed with Beacon Protection. This issue is fixed in iOS 18 and iPadOS 18, macOS Sequoia 15, tvOS 18. An attacker may be able to force a device to disconnect from a secure network.
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: 0.89%
- Percentile among all scored CVEs: 58
- Score date: 10/8/2026
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 (3)
CWEs
- NVD-CWE-noinfo
References
Raw JSON (NVD)
Show
{
"id": "CVE-2024-40856",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-40856",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-09-17T20:29:31.605822Z"
}
}
],
"cvssMetricV31": [
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"type": "Primary",
"source": "nvd@nist.gov",
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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"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
},
{
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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},
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}
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"affected": [
{
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"affectedData": [
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"published": "2024-09-17T00:15:49.490",
"references": [
{
"url": "https://support.apple.com/en-us/121238",
"tags": [
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"source": "product-security@apple.com"
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{
"url": "https://support.apple.com/en-us/121248",
"tags": [
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{
"url": "https://support.apple.com/en-us/121250",
"tags": [
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"source": "product-security@apple.com"
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{
"url": "http://seclists.org/fulldisclosure/2024/Sep/32",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://seclists.org/fulldisclosure/2024/Sep/33",
"source": "af854a3a-2127-422b-91ae-364da2661108"
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{
"url": "http://seclists.org/fulldisclosure/2024/Sep/34",
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
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"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An integrity issue was addressed with Beacon Protection. This issue is fixed in iOS 18 and iPadOS 18, macOS Sequoia 15, tvOS 18. An attacker may be able to force a device to disconnect from a secure network."
},
{
"lang": "es",
"value": "Se solucionó un problema de integridad con Beacon Protection. Este problema se solucionó en iOS 18 y iPadOS 18, tvOS 18 y macOS Sequoia 15. Un atacante podría forzar a un dispositivo a desconectarse de una red segura."
}
],
"lastModified": "2026-06-17T07:46:44.460",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"matchCriteriaId": "ACD3B3B0-329C-413B-BDF7-6B1C6298846E",
"versionEndExcluding": "18.0"
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"operator": "OR"
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}
],
"sourceIdentifier": "product-security@apple.com"
}