CVE-2021-31948
Estado: ModificadaAlta (8.1)—
Microsoft SharePoint Server Spoofing Vulnerability
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Puntuación base: 8.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.29%
- Percentil entre todas las CVEs puntuadas: 69
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (3)
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-31948",
"cveTags": [],
"metrics": {
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{
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"source": "nvd@nist.gov",
"cvssData": {
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"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
"authentication": "SINGLE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 4.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
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"confidentialityImpact": "HIGH"
},
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},
{
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"cvssData": {
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"integrityImpact": "HIGH",
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"affected": [
{
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"affectedData": [
{
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],
"vendor": "Microsoft",
"product": "Microsoft SharePoint Enterprise Server 2016",
"versions": [
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"version": "16.0.0",
"lessThan": "16.0.5173.1000",
"versionType": "custom"
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"platforms": [
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},
{
"cpes": [
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],
"vendor": "Microsoft",
"product": "Microsoft SharePoint Server 2019",
"versions": [
{
"status": "affected",
"version": "16.0.0",
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"platforms": [
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},
{
"cpes": [
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],
"vendor": "Microsoft",
"product": "Microsoft SharePoint Foundation 2013 Service Pack 1",
"versions": [
{
"status": "affected",
"version": "15.0.0",
"lessThan": "15.0.5353.1000",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
}
]
}
],
"published": "2021-06-08T23:15:08.650",
"references": [
{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31948",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "secure@microsoft.com"
},
{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31948",
"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": "Microsoft SharePoint Server Spoofing Vulnerability"
},
{
"lang": "es",
"value": "Una vulnerabilidad de Suplantación de Identidad de Microsoft SharePoint Server. Este ID de CVE es diferente de CVE-2021-31950, CVE-2021-31964"
}
],
"lastModified": "2026-06-17T03:52:32.840",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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},
{
"criteria": "cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*",
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{
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"operator": "OR"
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],
"sourceIdentifier": "secure@microsoft.com"
}