CVE-2025-54899
Full vulnerability record from the local CVENow database.
Description
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2025-09-09 17:16:00.907000
Last modified
2026-10-18 21:10:00.120000
View original CVE JSON
{
"id": "CVE-2025-54899",
"sourceIdentifier": "[email protected]",
"published": "2025-09-09T17:16:00.907",
"lastModified": "2026-10-18T21:10:00.120",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally."
},
{
"lang": "es",
"value": "Liberación de memoria no en el montón en Microsoft Office Excel permite a un atacante no autorizado ejecutar código localmente."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Microsoft",
"product": "Microsoft 365 Apps for Enterprise",
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"versions": [
{
"version": "16.0.1",
"lessThan": "https://aka.ms/OfficeSecurityReleases",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Excel 2016",
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"versions": [
{
"version": "16.0.0.0",
"lessThan": "16.0.5517.1000",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office 2019",
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"versions": [
{
"version": "19.0.0",
"lessThan": "https://aka.ms/OfficeSecurityReleases",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office LTSC 2021",
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"versions": [
{
"version": "16.0.1",
"lessThan": "https://aka.ms/OfficeSecurityReleases",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office LTSC 2024",
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"versions": [
{
"version": "16.0.0",
"lessThan": "https://aka.ms/OfficeSecurityReleases",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office LTSC for Mac 2021",
"versions": [
{
"version": "16.0.1",
"lessThan": "16.101.25091314",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Office LTSC for Mac 2024",
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{
"version": "16.0.0",
"lessThan": "16.101.25091314",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2025-09-10T03:55:48.570769Z",
"id": "CVE-2025-54899",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-590"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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}
],
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54899",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
}
]
}