CVE-2025-21186
Estado: AnalizadaAlta (7.8)—
Microsoft Access Remote Code Execution Vulnerability
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.14%
- Percentil entre todas las CVEs puntuadas: 65
- Fecha de la puntuación: 5/10/2026
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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1203Exploitation for Client Executionexecution90 % - Impacto principal
T1059Command and Scripting Interpreterexecution85 %
AV:L + UI:R indica explotación en el cliente (T1203): abrir archivo .mdb preparado en Access. CWE-122 (buffer overflow) permite RCE (T1059).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (4)
CWE
- CWE-122
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-21186",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-21186",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-02-06T04:55:44.208293Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "secure@microsoft.com",
"affectedData": [
{
"vendor": "Microsoft",
"product": "Microsoft 365 Apps for Enterprise",
"versions": [
{
"status": "affected",
"version": "16.0.1",
"lessThan": "https://aka.ms/OfficeSecurityReleases",
"versionType": "custom"
}
],
"platforms": [
"32-bit Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Access 2016",
"versions": [
{
"status": "affected",
"version": "16.0.0",
"lessThan": "16.0.5483.1001",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Access 2016 (32-bit edition)",
"versions": [
{
"status": "affected",
"version": "16.0.0",
"lessThan": "16.0.5483.1001",
"versionType": "custom"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office 2019",
"versions": [
{
"status": "affected",
"version": "19.0.0",
"lessThan": "https://aka.ms/OfficeSecurityReleases",
"versionType": "custom"
}
],
"platforms": [
"32-bit Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office LTSC 2021",
"versions": [
{
"status": "affected",
"version": "16.0.1",
"lessThan": "https://aka.ms/OfficeSecurityReleases",
"versionType": "custom"
}
],
"platforms": [
"32-bit Systems",
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office LTSC 2024",
"versions": [
{
"status": "affected",
"version": "16.0.0",
"lessThan": "https://aka.ms/OfficeSecurityReleases",
"versionType": "custom"
}
],
"platforms": [
"32-bit Systems",
"x64-based Systems"
]
}
]
}
],
"published": "2025-01-14T18:15:31.020",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21186",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "secure@microsoft.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"description": [
{
"lang": "en",
"value": "CWE-122"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Microsoft Access Remote Code Execution Vulnerability"
},
{
"lang": "es",
"value": "Vulnerabilidad de ejecución remota de código en Microsoft Access"
}
],
"lastModified": "2026-06-17T08:42:43.627",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "3259EBFE-AE2D-48B8-BE9A-E22BBDB31378"
},
{
"criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "CD25F492-9272-4836-832C-8439EBE64CCF"
},
{
"criteria": "cpe:2.3:a:microsoft:access:2016:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0E42DC73-F1D0-47CD-BED8-DB2C6E044E2D"
},
{
"criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:-:x64:*",
"vulnerable": true,
"matchCriteriaId": "68F37A38-9BC3-43FD-8E71-4EED079156D4"
},
{
"criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:-:x86:*",
"vulnerable": true,
"matchCriteriaId": "AFFA09D5-9992-462F-B52E-A1DDE2462064"
},
{
"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "75F7306B-D1DA-48C2-AF87-4480E161D794"
},
{
"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "BA9BCD55-F71E-4920-B906-A1386843776A"
},
{
"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "C461C8D7-D6DC-47E2-BF64-0872A4D24E43"
},
{
"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "875BEC9A-6123-48A9-8B89-88AEA8422B89"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secure@microsoft.com"
}