CVE-2025-27751
Status: AnalyzedHigh (7.8)—
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Base score: 7.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 2.48%
- Percentile among all scored CVEs: 84
- Score date: 10/5/2026
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).
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1203Exploitation for Client Executionexecution95 % - Primary impact
T1059Command and Scripting Interpreterexecution85 %
Vector CVSS con AV:L + UI:R (requiere interacción del usuario) indica ejecución en cliente al abrir archivo Excel preparado. CWE-416 (use-after-free) permite ejecución de código arbitrario.
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (5)
CWEs
- CWE-416
References
Raw JSON (NVD)
Show
{
"id": "CVE-2025-27751",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-27751",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-04-08T19:57:11.210124Z"
}
}
],
"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 Excel 2016",
"versions": [
{
"status": "affected",
"version": "16.0.0.0",
"lessThan": "16.0.5495.1000",
"versionType": "custom"
}
],
"platforms": [
"32-bit Systems",
"x64-based Systems"
]
},
{
"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"
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office LTSC for Mac 2021",
"versions": [
{
"status": "affected",
"version": "16.0.1",
"lessThan": "16.96.25041326",
"versionType": "custom"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office LTSC for Mac 2024",
"versions": [
{
"status": "affected",
"version": "16.0.0",
"lessThan": "16.96.25041326",
"versionType": "custom"
}
]
},
{
"vendor": "Microsoft",
"product": "Office Online Server",
"versions": [
{
"status": "affected",
"version": "16.0.0.0",
"lessThan": "16.0.10417.20003",
"versionType": "custom"
}
]
}
]
}
],
"published": "2025-04-08T18:16:04.680",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27751",
"tags": [
"Vendor Advisory"
],
"source": "secure@microsoft.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally."
},
{
"lang": "es",
"value": "Use after free en Microsoft Office Excel permite que un atacante no autorizado ejecute código localmente."
}
],
"lastModified": "2026-06-17T09:04:11.107",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*",
"vulnerable": true,
"matchCriteriaId": "40C15EDD-98D4-4D06-BA06-21AE0F33C72D"
},
{
"criteria": "cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "09BF0981-749E-470B-A7AC-95AD087797EF"
},
{
"criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FF177984-A906-43FA-BF60-298133FBBD6B"
},
{
"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:*:*",
"vulnerable": true,
"matchCriteriaId": "6C9D7C93-E8CB-4A8A-BA15-093B03ACC62F"
},
{
"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*",
"vulnerable": true,
"matchCriteriaId": "BF0E8112-5B6F-4E55-8E40-38ADCF6FC654"
},
{
"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:*:*",
"vulnerable": true,
"matchCriteriaId": "BEA7C196-354E-414A-B0B8-821658C8BFB1"
},
{
"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:*",
"vulnerable": true,
"matchCriteriaId": "EF3E56B5-E6A6-4061-9380-D421E52B9199"
},
{
"criteria": "cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E98AE986-FA31-4301-8025-E8915BA4AC5E"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secure@microsoft.com"
}