{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20408", "assignerOrgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374", "state": "PUBLISHED", "assignerShortName": "MediaTek", "dateReserved": "2025-11-03T01:30:59.008Z", "datePublished": "2026-02-02T08:14:56.694Z", "dateUpdated": "2026-02-03T14:54:18.206Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374", "shortName": "MediaTek", "dateUpdated": "2026-02-02T08:14:56.694Z"}, "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."}], "affected": [{"vendor": "MediaTek, Inc.", "product": "MT6890, MT7615, MT7915, MT7916, MT7981, MT7986", "versions": [{"version": "SDK release 7.6.7.2 and before / openWRT 19.07, 21.02, 23.05", "status": "affected"}]}], "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/February-2026"}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "cweId": "CWE-122", "description": "CWE-122 Heap Overflow"}]}]}, "adp": [{"metrics": [{"cvssV3_1": {"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"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-02-03T04:55:40.470235Z", "id": "CVE-2026-20408", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-03T14:54:18.206Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"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"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-20408", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-02-03T04:55:40.470235Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-02T14:02:20.563Z"}}], "cna": {"affected": [{"vendor": "MediaTek, Inc.", "product": "MT6890, MT7615, MT7915, MT7916, MT7981, MT7986", "versions": [{"status": "affected", "version": "SDK release 7.6.7.2 and before / openWRT 19.07, 21.02, 23.05"}]}], "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/February-2026"}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-122", "description": "CWE-122 Heap Overflow"}]}], "providerMetadata": {"orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374", "shortName": "MediaTek", "dateUpdated": "2026-02-02T08:14:56.694Z"}}}, "cveMetadata": {"cveId": "CVE-2026-20408", "state": "PUBLISHED", "dateUpdated": "2026-02-02T14:09:09.462Z", "dateReserved": "2025-11-03T01:30:59.008Z", "assignerOrgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374", "datePublished": "2026-02-02T08:14:56.694Z", "assignerShortName": "MediaTek"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mediatek:software_development_kit:*:*:*:*:*:*:*:*", "matchCriteriaId": "0DD86CC1-BD46-42D2-9112-190CCAC96B30", "versionEndIncluding": "7.6.7.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:openwrt:openwrt:19.07.0:-:*:*:*:*:*:*", "matchCriteriaId": "4FA469E2-9E63-4C9A-8EBA-10C8C870063A", "vulnerable": true}, {"criteria": "cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:*", "matchCriteriaId": "F0133207-2EED-4625-854F-8DB7770D5BF7", "vulnerable": true}, {"criteria": "cpe:2.3:o:openwrt:openwrt:23.05.0:-:*:*:*:*:*:*", "matchCriteriaId": "00113669-2850-4F0C-913A-92CA5290746E", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*", "matchCriteriaId": "171D1C08-F055-44C0-913C-AA2B73AF5B72", "vulnerable": false}, {"criteria": "cpe:2.3:h:mediatek:mt7615:-:*:*:*:*:*:*:*", "matchCriteriaId": "05748BB1-0D48-4097-932E-E8E2E574FD8D", "vulnerable": false}, {"criteria": "cpe:2.3:h:mediatek:mt7915:-:*:*:*:*:*:*:*", "matchCriteriaId": "3AB22996-9C22-4B6C-9E94-E4C055D16335", "vulnerable": false}, {"criteria": "cpe:2.3:h:mediatek:mt7916:-:*:*:*:*:*:*:*", "matchCriteriaId": "DD5AA441-5381-4179-89EB-1642120F72B4", "vulnerable": false}, {"criteria": "cpe:2.3:h:mediatek:mt7981:-:*:*:*:*:*:*:*", "matchCriteriaId": "490CD97B-021F-4350-AEE7-A2FA866D5889", "vulnerable": false}, {"criteria": "cpe:2.3:h:mediatek:mt7986:-:*:*:*:*:*:*:*", "matchCriteriaId": "40A9E917-4B34-403F-B512-09EEBEA46811", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "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."}], "id": "CVE-2026-20408", "lastModified": "2026-02-04T13:48:41.430", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-02-02T09:15:55.657", "references": [{"source": "security@mediatek.com", "tags": ["Vendor Advisory"], "url": "https://corp.mediatek.com/product-security-bulletin/February-2026"}], "sourceIdentifier": "security@mediatek.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "security@mediatek.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"created": "2026-02-04T12:44:47.634829+00:00", "updated": "2026-02-04T12:44:47.634855+00:00", "vendors": ["mediatek", "mediatek$PRODUCT$mt6890", "mediatek$PRODUCT$mt7615", "mediatek$PRODUCT$mt7915", "mediatek$PRODUCT$mt7916", "mediatek$PRODUCT$mt7981", "mediatek$PRODUCT$mt7986"]}