CVE-2019-1321
Status: ModifiedHigh (7.8)—
An elevation of privilege vulnerability exists when Windows CloudStore improperly handles file Discretionary Access Control List (DACL), aka 'Microsoft Windows CloudStore Elevation of Privilege Vulnerability'.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Base score: 7.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.97%
- Percentile among all scored CVEs: 61
- Score date: 10/17/2026
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-2019-1321",
"cveTags": [],
"metrics": {
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"accessVector": "LOCAL",
"vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
"authentication": "NONE",
"integrityImpact": "COMPLETE",
"accessComplexity": "LOW",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "COMPLETE"
},
"acInsufInfo": false,
"impactScore": 10,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 3.9,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
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"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
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}
]
},
"affected": [
{
"source": "secure@microsoft.com",
"affectedData": [
{
"vendor": "Microsoft",
"product": "Windows",
"versions": [
{
"status": "affected",
"version": "10 Version 1703 for 32-bit Systems"
},
{
"status": "affected",
"version": "10 Version 1703 for x64-based Systems"
},
{
"status": "affected",
"version": "10 Version 1709 for 32-bit Systems"
},
{
"status": "affected",
"version": "10 Version 1709 for x64-based Systems"
},
{
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"version": "10 Version 1803 for 32-bit Systems"
},
{
"status": "affected",
"version": "10 Version 1803 for x64-based Systems"
},
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"version": "10 Version 1803 for ARM64-based Systems"
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{
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{
"vendor": "Microsoft",
"product": "Windows Server",
"versions": [
{
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"version": "version 1803 (Core Installation)"
},
{
"status": "affected",
"version": "2019"
},
{
"status": "affected",
"version": "2019 (Core installation)"
}
]
},
{
"vendor": "Microsoft",
"product": "Windows 10 Version 1903 for 32-bit Systems",
"versions": [
{
"status": "affected",
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}
]
},
{
"vendor": "Microsoft",
"product": "Windows 10 Version 1903 for x64-based Systems",
"versions": [
{
"status": "affected",
"version": "unspecified"
}
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},
{
"vendor": "Microsoft",
"product": "Windows 10 Version 1903 for ARM64-based Systems",
"versions": [
{
"status": "affected",
"version": "unspecified"
}
]
},
{
"vendor": "Microsoft",
"product": "Windows Server, version 1903 (Server Core installation)",
"versions": [
{
"status": "affected",
"version": "unspecified"
}
]
}
]
}
],
"published": "2019-10-10T14:15:16.127",
"references": [
{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1321",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "secure@microsoft.com"
},
{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1321",
"tags": [
"Patch",
"Vendor Advisory"
],
"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": "An elevation of privilege vulnerability exists when Windows CloudStore improperly handles file Discretionary Access Control List (DACL), aka 'Microsoft Windows CloudStore Elevation of Privilege Vulnerability'."
},
{
"lang": "es",
"value": "Existe una vulnerabilidad de elevación de privilegios cuando Windows CloudStore maneja inapropiadamente la Discretionary Access Control List (DACL) de archivos, también se conoce como \"Microsoft Windows CloudStore Elevation of Privilege Vulnerability\"."
}
],
"lastModified": "2026-06-17T02:28:22.570",
"configurations": [
{
"nodes": [
{
"negate": false,
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"sourceIdentifier": "secure@microsoft.com"
}