CVE-2024-43426
A flaw was found in pdfTeX. Insufficient sanitizing in the TeX notation filter resulted in an arbitrary file read risk on sites where pdfTeX is available, such as those with TeX Live installed.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.71%
- Percentil entre todas las CVEs puntuadas: 52
- Fecha de la puntuación: 6/10/2026
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
T1190Exploit Public-Facing Applicationinitial access85 % - Impacto principal
T1005Data from Local Systemcollection80 %
AV:N/PR:N/UI:N indica explotación remota sin autenticación (T1190). Filtro insuficiente en notación TeX permite lectura arbitraria de archivos (T1005) en servidores con pdfTeX/TeX Live.
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 (1)
CWE
- CWE-1287
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2024-43426",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-43426",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-11-07T14:41:10.596625Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "patrick@puiterwijk.org",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "patrick@puiterwijk.org",
"affectedData": [
{
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "4.1.12",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.2",
"lessThan": "4.2.9",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.3",
"lessThan": "4.3.6",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.4",
"lessThan": "4.4.2",
"versionType": "semver"
}
],
"packageName": "moodle",
"collectionURL": "https://github.com/moodle/moodle",
"defaultStatus": "unaffected"
}
]
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"affectedData": [
{
"cpes": [
"cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*"
],
"vendor": "moodle",
"product": "moodle",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "4.1.12",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.2",
"lessThan": "4.2.9",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.3",
"lessThan": "4.3.6",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.4",
"lessThan": "4.4.2",
"versionType": "semver"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2024-11-07T14:15:15.510",
"references": [
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2304254",
"tags": [
"Permissions Required"
],
"source": "patrick@puiterwijk.org"
},
{
"url": "https://moodle.org/mod/forum/discuss.php?d=461194",
"tags": [
"Vendor Advisory"
],
"source": "patrick@puiterwijk.org"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-1287"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in pdfTeX. Insufficient sanitizing in the TeX notation filter resulted in an arbitrary file read risk on sites where pdfTeX is available, such as those with TeX Live installed."
},
{
"lang": "es",
"value": "Se encontró una falla en pdfTeX. Una desinfección insuficiente en el filtro de notación TeX resultó en un riesgo de lectura arbitraria de archivos en sitios donde pdfTeX está disponible, como aquellos con TeX Live instalado."
}
],
"lastModified": "2026-06-17T07:51:01.470",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1C7D59EF-3215-477B-8056-B3954A4064D0",
"versionEndExcluding": "4.1.12",
"versionStartIncluding": "4.1.0"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B8D123FB-556C-4602-91CB-ABE6541079F3",
"versionEndExcluding": "4.2.9",
"versionStartIncluding": "4.2.0"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FBA8C381-9493-42BD-A5EA-7AADFAB68C5E",
"versionEndExcluding": "4.3.6",
"versionStartIncluding": "4.3.0"
},
{
"criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "277E1058-2F00-45DB-8BFC-2628CCC89981",
"versionEndExcluding": "4.4.2",
"versionStartIncluding": "4.4.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "patrick@puiterwijk.org"
}