CVE-2018-4303
Status: ModifiedHigh (7.8)—
An input validation issue was addressed with improved input validation. This issue affected versions prior to macOS Mojave 10.14, iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2.
CVSS
- Version: 3.0
- Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Base score: 7.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.92%
- Percentile among all scored CVEs: 59
- 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 (4)
CWEs
- CWE-20
References
Raw JSON (NVD)
Show
{
"id": "CVE-2018-4303",
"cveTags": [],
"metrics": {
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"type": "Primary",
"source": "nvd@nist.gov",
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"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,
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}
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"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
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"impactScore": 5.9,
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"affected": [
{
"source": "product-security@apple.com",
"affectedData": [
{
"vendor": "n/a",
"product": "macOS, iOS, tvOS, watchOS",
"versions": [
{
"status": "affected",
"version": "Versions prior to: macOS Mojave 10.14, iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2"
}
]
}
]
}
],
"published": "2019-04-03T18:29:06.063",
"references": [
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"url": "https://support.apple.com/kb/HT209340",
"tags": [
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},
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"tags": [
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"tags": [
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{
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"tags": [
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"tags": [
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"source": "af854a3a-2127-422b-91ae-364da2661108"
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"vulnStatus": "Modified",
"weaknesses": [
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"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-20"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An input validation issue was addressed with improved input validation. This issue affected versions prior to macOS Mojave 10.14, iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2."
},
{
"lang": "es",
"value": "Un problema de validación de entradas se abordó con una validación de entradas mejorada. Este problema afectaba a macOS Mojave en versiones anteriores a la 10.14, iOS en versiones anteriores a la 12.1.1, macOS Mojave en versiones anteriores a la 10.14.2, tvOS en versiones anteriores a la 12.1.1 y watchOS en versiones anteriores a la 5.1.2."
}
],
"lastModified": "2026-06-17T01:58:45.207",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"operator": "OR"
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"sourceIdentifier": "product-security@apple.com"
}