CVE-2026-20403

{"id": "CVE-2026-20403", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2026-02-02T09:15:54.963", "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/February-2026", "tags": ["Vendor Advisory"], "source": "security@mediatek.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security@mediatek.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In Modem, there is a possible system crash due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01689254 (Note: For N15 and NR16) / MOLY01689259 (Note: For NR17 and NR17R); Issue ID: MSV-4843."}, {"lang": "es", "value": "En el m\u00f3dem, existe una posible ca\u00edda del sistema debido a una comprobaci\u00f3n de l\u00edmites faltante. Esto podr\u00eda llevar a una denegaci\u00f3n de servicio remota, si un UE se ha conectado a una estaci\u00f3n base maliciosa controlada por el atacante, sin necesidad de privilegios de ejecuci\u00f3n adicionales. No se necesita interacci\u00f3n del usuario para la explotaci\u00f3n. ID del parche: MOLY01689254 (Nota: Para N15 y NR16) / MOLY01689259 (Nota: Para NR17 y NR17R); ID del problema: MSV-4843."}], "lastModified": "2026-02-17T15:16:21.033", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:nr15:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E30A2D2E-6A72-4070-A471-EEE75F7D07F2"}, {"criteria": "cpe:2.3:o:mediatek:nr16:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2B763B71-F913-45B4-B91E-D7F0670C4315"}, {"criteria": "cpe:2.3:o:mediatek:nr17:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "66F8874B-DBF1-4A67-8ADF-4654AB56B6A8"}, {"criteria": "cpe:2.3:o:mediatek:nr17r:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BC63582A-F9A5-4450-A263-CE1FD4B4F3AC"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "7F1D09FC-5BE9-4B23-82F1-3C6EAC5711A6"}, {"criteria": 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