CVE-2025-66382
Full vulnerability record from the local CVENow database.
Description
In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2025-11-28 07:15:57.900000
Last modified
2026-10-19 13:10:00.110000
View original CVE JSON
{
"id": "CVE-2025-66382",
"sourceIdentifier": "[email protected]",
"published": "2025-11-28T07:15:57.900",
"lastModified": "2026-10-19T13:10:00.110",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time."
},
{
"lang": "es",
"value": "En libexpat hasta 2.7.3, un archivo especialmente diseñado con un tamaño aproximado de 2 MiB puede provocar decenas de segundos de tiempo de procesamiento."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "libexpat project",
"product": "libexpat",
"defaultStatus": "unaffected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "2.7.5",
"versionType": "semver",
"status": "affected"
}
]
}
]
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"affectedData": [
{
"vendor": "Siemens",
"product": "RUGGEDCOM RST2428P",
"defaultStatus": "unknown",
"versions": [
{
"version": "0",
"lessThan": "V4.0",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
"defaultStatus": "unknown",
"versions": [
{
"version": "V3.1.5",
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}
]
},
{
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}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"baseScore": 2.9,
"baseSeverity": "LOW",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "LOW"
},
"exploitabilityScore": 1.4,
"impactScore": 1.4
},
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2025-12-03T16:08:41.228187Z",
"id": "CVE-2025-66382",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-407"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"matchCriteriaId": "3DBC21F7-1BF6-4758-B502-23128DDE3C88"
}
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}
],
"references": [
{
"url": "https://github.com/libexpat/libexpat/issues/1076",
"source": "[email protected]",
"tags": [
"Issue Tracking"
]
},
{
"url": "http://www.openwall.com/lists/oss-security/2025/12/02/1",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
]
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html",
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
},
{
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"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
]
}