{"id": "CVE-2026-20431", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20431", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-07T12:59:15.295899Z"}}], "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}]}, "affected": [{"source": "security@mediatek.com", "affectedData": [{"vendor": "MediaTek, Inc.", "product": "MediaTek chipset", "versions": [{"status": "affected", "version": "MT6813"}, {"status": "affected", "version": "MT6815"}, {"status": "affected", "version": "MT6835"}, {"status": "affected", "version": "MT6878"}, {"status": "affected", "version": "MT6897"}, {"status": "affected", "version": "MT6899"}, {"status": "affected", "version": "MT6986"}, {"status": "affected", "version": "MT6991"}, {"status": "affected", "version": "MT6993"}, {"status": "affected", "version": "MT8668"}, {"status": "affected", "version": "MT8676"}, {"status": "affected", "version": "MT8678"}, {"status": "affected", "version": "MT8755"}, {"status": "affected", "version": "MT8775"}, {"status": "affected", "version": "MT8792"}, {"status": "affected", "version": "MT8793"}, {"status": "affected", "version": "MT8863"}, {"status": "affected", "version": "MT8873"}, {"status": "affected", "version": "MT8883"}], "defaultStatus": "unaffected"}]}], "published": "2026-04-07T04:16:59.930", "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/April-2026", "tags": ["Vendor Advisory"], "source": "security@mediatek.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@mediatek.com", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "In Modem, there is a possible system crash due to a logic error. 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: MOLY01106496; Issue ID: MSV-4467."}, {"lang": "es", "value": "En el M\u00f3dem, existe una posible ca\u00edda del sistema debido a un error de l\u00f3gica. 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: MOLY01106496; ID del problema: MSV-4467."}], "lastModified": "2026-07-24T22:10:00.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6813_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0E1CB25C-4643-4239-AE47-B5AE876416ED"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6813:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "66F9EAE4-F1D7-46DB-AA2A-0290F6EF0501"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6815_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6FE3EEC2-1B07-40FA-90CA-3209C3578FA2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6815:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B7122918-8C44-4F24-82E4-B8448247FC83"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6835_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "00B1D726-8183-4667-B46D-18EF110EA9D9"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "19A63103-C708-48EC-B44D-5E465A6B79C5"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6878_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "207954E6-D413-4762-9F4A-3A147CFB4FE2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "855A8046-34ED-4891-ACE5-76AB10AC8D53"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6897_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A04EA650-730F-4E5D-A0E0-90570CACDD5E"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2A7D8055-F4B6-41EE-A078-11D56285AB66"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6899_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BEBA484A-EC07-4D3D-80CD-BDE9E7807F71"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "C6E9F80F-9AC9-41E0-BB14-9DB6F14B62CD"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6986_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17581EC0-D68B-4EA3-845C-366C4A65FC6B"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6986:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "1F419FE2-2D6D-48EE-9B6C-E88AC5D44186"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D9DD2119-39E8-4A9C-8E2A-8FB7F92A1001"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "CBBB30DF-E963-4940-B742-F6801F68C3FC"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FAEB2240-FF37-4CBE-BBEF-8A8281153646"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6993:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "57E92BE0-5E65-4770-8E1A-0E5D07A38164"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8668_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EAACB56-716C-4E17-AB78-F5E68B75B791"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2589C222-3D62-4BDB-98F2-5F1E38600D8D"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "645D7C99-A0A0-4FB0-97AC-3DA5161A44D9"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EE302F6F-170E-4350-A8F4-65BE0C50CB78"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CFEC7A7B-6948-4B8A-BFA1-9F9D07043605"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "152A5F3D-8004-4649-BDB1-E6F0798AF1CB"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8755_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6B49A54E-B0C5-45C4-8396-5E6A2613E3B1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8755:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "1CF88096-5CBD-4A4B-8F47-33D38985956F"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8775_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FAA319BC-2689-497C-8D7D-482CD2AD89A1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8775:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "DE5FB550-7264-4879-BAF9-6798949113AF"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8792_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AE904A76-14A2-41D5-86FF-BCA686342E85"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "336FC69E-E89F-4642-B6B9-8009D9A2BD52"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8793_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "42C2F52D-C49C-4AFF-B6FA-FFA82EF96142"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2FBD3487-F8CE-406C-8BD7-DD57FF8CD60B"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8863_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "03A3F0E1-3226-4CB5-AE9F-BDA327590107"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8863:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "77E0D738-F0B9-468F-8A10-204F498320BC"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8873_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9D40337A-B78E-41CF-ADDC-A31190950F73"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8873:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "D6DD525F-7050-42BD-829D-1121698B8009"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8883_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C5049DE8-5F0C-4E0D-85AE-F47CECE2DCE8"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8883:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "23DD8281-FEB4-4E23-8DDA-680FF895F12E"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@mediatek.com"}
