CVE-2020-9916
Status: ModifiedMedium (5.3)—
A URL Unicode encoding issue was addressed with improved state management. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. A malicious attacker may be able to conceal the destination of a URL.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Base score: 5.3
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 1.38%
- Percentile among all scored CVEs: 71
- 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 (7)
CWEs
- NVD-CWE-noinfo
References
- https://support.apple.com/HT211288
- https://support.apple.com/HT211290
- https://support.apple.com/HT211291
- https://support.apple.com/HT211292
- https://support.apple.com/HT211293
- https://support.apple.com/HT211294
- https://support.apple.com/HT211295
- https://support.apple.com/HT211288
- https://support.apple.com/HT211290
- https://support.apple.com/HT211291
- https://support.apple.com/HT211292
- https://support.apple.com/HT211293
- https://support.apple.com/HT211294
- https://support.apple.com/HT211295
Raw JSON (NVD)
Show
{
"id": "CVE-2020-9916",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.3,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 1.4,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "product-security@apple.com",
"affectedData": [
{
"vendor": "Apple",
"product": "iOS",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "iOS 13.6 and iPadOS 13.6",
"versionType": "custom"
}
]
},
{
"vendor": "Apple",
"product": "tvOS",
"versions": [
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"version": "unspecified",
"lessThan": "tvOS 13.4.8",
"versionType": "custom"
}
]
},
{
"vendor": "Apple",
"product": "watchOS",
"versions": [
{
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"version": "unspecified",
"lessThan": "watchOS 6.2.8",
"versionType": "custom"
}
]
},
{
"vendor": "Apple",
"product": "Safari",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "Safari 13.1.2",
"versionType": "custom"
}
]
},
{
"vendor": "Apple",
"product": "iTunes for Windows",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "iTunes 12.10.8 for Windows",
"versionType": "custom"
}
]
},
{
"vendor": "Apple",
"product": "iCloud for Windows",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "iCloud for Windows 11.3",
"versionType": "custom"
}
]
},
{
"vendor": "Apple",
"product": "iCloud for Windows (Legacy)",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "iCloud for Windows 7.20",
"versionType": "custom"
}
]
}
]
}
],
"published": "2020-10-16T17:15:17.137",
"references": [
{
"url": "https://support.apple.com/HT211288",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"source": "product-security@apple.com"
},
{
"url": "https://support.apple.com/HT211290",
"tags": [
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],
"source": "product-security@apple.com"
},
{
"url": "https://support.apple.com/HT211291",
"tags": [
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],
"source": "product-security@apple.com"
},
{
"url": "https://support.apple.com/HT211292",
"tags": [
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"source": "product-security@apple.com"
},
{
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"tags": [
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],
"source": "product-security@apple.com"
},
{
"url": "https://support.apple.com/HT211294",
"tags": [
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],
"source": "product-security@apple.com"
},
{
"url": "https://support.apple.com/HT211295",
"tags": [
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],
"source": "product-security@apple.com"
},
{
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"source": "af854a3a-2127-422b-91ae-364da2661108"
},
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{
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{
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],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
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"tags": [
"Release Notes",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
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"tags": [
"Release Notes",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://support.apple.com/HT211295",
"tags": [
"Release Notes",
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],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A URL Unicode encoding issue was addressed with improved state management. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. A malicious attacker may be able to conceal the destination of a URL."
},
{
"lang": "es",
"value": "Se abordó un problema de codificación de URL Unicode con una administración de estado mejorada. Este problema es corregido en iOS versión 13.6 y iPadOS versión 13.6, tvOS versión 13.4.8, watchOS versión 6.2.8, Safari versión 13.1.2, iTunes versión 12.10.8 para Windows, iCloud para Windows versión 11.3, iCloud para Windows versión 7.20. Un atacante malicioso puede ocultar el destino de una URL"
}
],
"lastModified": "2026-06-17T03:28:48.070",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"vulnerable": true,
"matchCriteriaId": "5B3BB46F-F586-4A2B-91C6-4D3AA226B478",
"versionEndExcluding": "7.20"
},
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"matchCriteriaId": "354F932A-81A0-4C4F-91C0-8C76C72CC4E1",
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{
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"operator": "OR"
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],
"sourceIdentifier": "product-security@apple.com"
}