CVE-2021-30727
Status: ModifiedMedium (5.5)—
A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6. A malicious application may be able to modify protected parts of the file system.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- Base score: 5.5
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.96%
- Percentile among all scored CVEs: 60
- 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 (5)
CWEs
- NVD-CWE-noinfo
References
- https://support.apple.com/en-us/HT212528
- https://support.apple.com/en-us/HT212529
- https://support.apple.com/en-us/HT212532
- https://support.apple.com/en-us/HT212533
- https://support.apple.com/en-us/HT212528
- https://support.apple.com/en-us/HT212529
- https://support.apple.com/en-us/HT212532
- https://support.apple.com/en-us/HT212533
Raw JSON (NVD)
Show
{
"id": "CVE-2021-30727",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 4.3,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "MEDIUM",
"availabilityImpact": "NONE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8.6,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": true
}
],
"cvssMetricV31": [
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "product-security@apple.com",
"affectedData": [
{
"vendor": "Apple",
"product": "iOS and iPadOS",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "14.6",
"versionType": "custom"
}
]
},
{
"vendor": "Apple",
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"versions": [
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{
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"published": "2021-09-08T14:15:08.927",
"references": [
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"tags": [
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],
"source": "product-security@apple.com"
},
{
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"tags": [
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"source": "product-security@apple.com"
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{
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{
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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": "A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6. A malicious application may be able to modify protected parts of the file system."
},
{
"lang": "es",
"value": "Se abordó un problema lógico con una administración de estado mejorada. Este problema se corrigió en macOS Big Sur versión 11.4, tvOS versión 14.6, watchOS versión 7.5, iOS versión 14.6 e iPadOS versión 14.6. Una aplicación maliciosa puede ser capaz de modificar partes protegidas del sistema de archivos"
}
],
"lastModified": "2026-06-17T03:50:46.410",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"matchCriteriaId": "168B0313-B7B6-4CD5-AD4F-C133050498BF",
"versionEndExcluding": "14.6"
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{
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{
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"matchCriteriaId": "391D9971-3C67-4B94-9AF2-1D4D23DAF95F",
"versionEndExcluding": "11.4",
"versionStartIncluding": "11.0.1"
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{
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{
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"versionEndExcluding": "7.5"
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],
"operator": "OR"
}
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}
],
"sourceIdentifier": "product-security@apple.com"
}