CVE-2026-20408

{"id": "CVE-2026-20408", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2026-02-02T09:15:55.657", "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/February-2026", "tags": ["Vendor Advisory"], "source": "security@mediatek.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@mediatek.com", "description": [{"lang": "en", "value": "CWE-122"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In wlan, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461651; Issue ID: MSV-4758."}, {"lang": "es", "value": "En WLAN, existe una posible escritura fuera de l\u00edmites debido a un desbordamiento de b\u00fafer en el heap. Esto podr\u00eda conducir a una escalada de privilegios remota (pr\u00f3xima/adyacente) sin necesidad de privilegios de ejecuci\u00f3n adicionales. No se requiere interacci\u00f3n del usuario para la explotaci\u00f3n. ID del parche: WCNCR00461651; ID del problema: MSV-4758."}], "lastModified": "2026-02-04T13:48:41.430", "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"}, {"criteria": "cpe:2.3:o:openwrt:openwrt:23.05.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "00113669-2850-4F0C-913A-92CA5290746E"}], "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: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"}