CVE-2025-20739
Estado: AnalizadaMedia (6.7)—
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00435340; Issue ID: MSV-4038.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 6.7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.15%
- Percentil entre todas las CVEs puntuadas: 3
- Fecha de la puntuación: 1/10/2026
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).
Tecnologías afectadas (2)
CWE
- CWE-121
- CWE-787
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-20739",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-20739",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-11-05T04:55:34.067524Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.7,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 0.8
}
]
},
"affected": [
{
"source": "security@mediatek.com",
"affectedData": [
{
"vendor": "MediaTek, Inc.",
"product": "MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986",
"versions": [
{
"status": "affected",
"version": "SDK release 7.6.7.2 and before / openWRT 19.07, 21.02"
}
]
}
]
}
],
"published": "2025-11-04T07:15:43.343",
"references": [
{
"url": "https://corp.mediatek.com/product-security-bulletin/November-2025",
"tags": [
"Vendor Advisory"
],
"source": "security@mediatek.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "security@mediatek.com",
"description": [
{
"lang": "en",
"value": "CWE-121"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00435340; Issue ID: MSV-4038."
}
],
"lastModified": "2026-06-17T08:41:57.603",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mediatek:software_development_kit:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0DD86CC1-BD46-42D2-9112-190CCAC96B30",
"versionEndIncluding": "7.6.7.2"
},
{
"criteria": "cpe:2.3:o:openwrt:openwrt:19.07.0:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4FA469E2-9E63-4C9A-8EBA-10C8C870063A"
},
{
"criteria": "cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F0133207-2EED-4625-854F-8DB7770D5BF7"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "171D1C08-F055-44C0-913C-AA2B73AF5B72"
},
{
"criteria": "cpe:2.3:h:mediatek:mt7615:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "05748BB1-0D48-4097-932E-E8E2E574FD8D"
},
{
"criteria": "cpe:2.3:h:mediatek:mt7622:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "55EB4B27-6264-45BE-9A22-BE8418BB0C06"
},
{
"criteria": "cpe:2.3:h:mediatek:mt7663:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "10C79211-F064-499D-914E-0BACD038FBF4"
},
{
"criteria": "cpe:2.3:h:mediatek:mt7915:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "3AB22996-9C22-4B6C-9E94-E4C055D16335"
},
{
"criteria": "cpe:2.3:h:mediatek:mt7916:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "DD5AA441-5381-4179-89EB-1642120F72B4"
},
{
"criteria": "cpe:2.3:h:mediatek:mt7981:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "490CD97B-021F-4350-AEE7-A2FA866D5889"
},
{
"criteria": "cpe:2.3:h:mediatek:mt7986:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "40A9E917-4B34-403F-B512-09EEBEA46811"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "security@mediatek.com"
}