CVE-2021-34501
Estado: ModificadaAlta (8.8)—
Microsoft Excel Remote Code Execution Vulnerability
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 52%
- Percentil entre todas las CVEs puntuadas: 99
- Fecha de la puntuación: 7/10/2026
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 (4)
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-34501",
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"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "MEDIUM",
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"impactScore": 6.4,
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],
"published": "2021-07-14T18:15:11.730",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34501",
"source": "secure@microsoft.com"
},
{
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34501",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-969/",
"tags": [
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],
"source": "af854a3a-2127-422b-91ae-364da2661108"
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],
"vulnStatus": "Modified",
"weaknesses": [
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"description": [
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],
"descriptions": [
{
"lang": "en",
"value": "Microsoft Excel Remote Code Execution Vulnerability"
},
{
"lang": "es",
"value": "Una vulnerabilidad de Ejecución de Código Remota de Microsoft Excel . Este ID de CVE es diferente de CVE-2021-34518"
}
],
"lastModified": "2026-08-10T16:17:53.790",
"configurations": [
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"sourceIdentifier": "secure@microsoft.com"
}