FKIE_CVE-2025-4087
Vulnerability from fkie_nvd - Published: 2025-04-29 14:15 - Updated: 2026-06-17 09:32
Severity
Summary
A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Thunderbird 138, and Thunderbird 128.10.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| mozilla | firefox | * | |
| mozilla | firefox | * | |
| mozilla | thunderbird | * | |
| mozilla | thunderbird | * |
{
"affected": [
{
"affectedData": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "128.*",
"status": "unaffected",
"version": "128.10",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "138",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "128.*",
"status": "unaffected",
"version": "128.10",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "138",
"versionType": "rpm"
}
]
}
],
"source": "security@mozilla.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*",
"matchCriteriaId": "3378E5EE-9ABF-444B-AA88-9EAF8D8058DE",
"versionEndExcluding": "128.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*",
"matchCriteriaId": "EB8A8C7B-B65D-4DF5-BDB5-0C3C4E2DB72C",
"versionEndExcluding": "138.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*",
"matchCriteriaId": "DC19822B-CC07-4C6F-BAAD-C7A9C4E73FA9",
"versionEndExcluding": "128.10.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*",
"matchCriteriaId": "D1E8CCF1-4E91-44CC-A652-B23D1337A485",
"versionEndExcluding": "138.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Thunderbird 138, and Thunderbird 128.10."
},
{
"lang": "es",
"value": "Se identific\u00f3 una vulnerabilidad en Firefox donde el an\u00e1lisis de XPath pod\u00eda generar un comportamiento indefinido debido a la omisi\u00f3n de comprobaciones nulas durante el acceso a atributos. Esto podr\u00eda provocar accesos de lectura fuera de los l\u00edmites y, potencialmente, corrupci\u00f3n de memoria. Esta vulnerabilidad afecta a Firefox \u0026lt; 138, Firefox ESR \u0026lt; 128.10, Thunderbird \u0026lt; 138 y Thunderbird ESR \u0026lt; 128.10."
}
],
"id": "CVE-2025-4087",
"lastModified": "2026-06-17T09:32:28.460",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 2.5,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-4087",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-29T15:51:33.871165Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-04-29T14:15:35.357",
"references": [
{
"source": "security@mozilla.org",
"tags": [
"Permissions Required"
],
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1952465"
},
{
"source": "security@mozilla.org",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2025-28/"
},
{
"source": "security@mozilla.org",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2025-29/"
},
{
"source": "security@mozilla.org",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2025-31/"
},
{
"source": "security@mozilla.org",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2025-32/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html"
}
],
"sourceIdentifier": "security@mozilla.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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