{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20433", "assignerOrgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374", "state": "PUBLISHED", "assignerShortName": "MediaTek", "dateReserved": "2025-11-03T01:30:59.011Z", "datePublished": "2026-04-07T03:25:32.066Z", "dateUpdated": "2026-04-07T13:01:21.103Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374", "shortName": "MediaTek", "dateUpdated": "2026-04-07T03:25:32.066Z"}, "descriptions": [{"lang": "en", "value": "In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460."}], "affected": [{"vendor": "MediaTek, Inc.", "product": "MediaTek chipset", "defaultStatus": "unaffected", "versions": [{"version": "MT2735", "status": "affected"}, {"version": "MT2737", "status": "affected"}, {"version": "MT6813", "status": "affected"}, {"version": "MT6833", "status": "affected"}, {"version": "MT6833P", "status": "affected"}, {"version": "MT6835", "status": "affected"}, {"version": "MT6835T", "status": "affected"}, {"version": "MT6853", "status": "affected"}, {"version": "MT6853T", "status": "affected"}, {"version": "MT6855", "status": "affected"}, {"version": "MT6855T", "status": "affected"}, {"version": "MT6873", "status": "affected"}, {"version": "MT6875", "status": "affected"}, {"version": "MT6875T", "status": "affected"}, {"version": "MT6877", "status": "affected"}, {"version": "MT6877T", "status": "affected"}, {"version": "MT6877TT", "status": "affected"}, {"version": "MT6878", "status": "affected"}, {"version": "MT6878M", "status": "affected"}, {"version": "MT6879", "status": "affected"}, {"version": "MT6880", "status": "affected"}, {"version": "MT6883", "status": "affected"}, {"version": "MT6885", "status": "affected"}, {"version": "MT6886", "status": "affected"}, {"version": "MT6889", "status": "affected"}, {"version": "MT6890", "status": "affected"}, {"version": "MT6891", "status": "affected"}, {"version": "MT6893", "status": "affected"}, {"version": "MT6895", "status": "affected"}, {"version": "MT6895TT", "status": "affected"}, {"version": "MT6896", "status": "affected"}, {"version": "MT6897", "status": "affected"}, {"version": "MT6899", "status": "affected"}, {"version": "MT6980", "status": "affected"}, {"version": "MT6980D", "status": "affected"}, {"version": "MT6983", "status": "affected"}, {"version": "MT6983T", "status": "affected"}, {"version": "MT6985", "status": "affected"}, {"version": "MT6985T", "status": "affected"}, {"version": "MT6989", "status": "affected"}, {"version": "MT6989T", "status": "affected"}, {"version": "MT6990", "status": "affected"}, {"version": "MT6991", "status": "affected"}, {"version": "MT8668", "status": "affected"}, {"version": "MT8673", "status": "affected"}, {"version": "MT8675", "status": "affected"}, {"version": "MT8676", "status": "affected"}, {"version": "MT8678", "status": "affected"}, {"version": "MT8755", "status": "affected"}, {"version": "MT8771", "status": "affected"}, {"version": "MT8775", "status": "affected"}, {"version": "MT8791", "status": "affected"}, {"version": "MT8791T", "status": "affected"}, {"version": "MT8792", "status": "affected"}, {"version": "MT8793", "status": "affected"}, {"version": "MT8795T", "status": "affected"}, {"version": "MT8797", "status": "affected"}, {"version": "MT8798", "status": "affected"}, {"version": "MT8863", "status": "affected"}, {"version": "MT8873", "status": "affected"}, {"version": "MT8883", "status": "affected"}, {"version": "MT8893", "status": "affected"}]}], "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/April-2026"}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write"}]}], "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-787", "lang": "en", "description": "CWE-787 Out-of-bounds Write"}]}], "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": "2026-04-07T13:01:18.631553Z", "id": "CVE-2026-20433", "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": "2026-04-07T13:01:21.103Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460."}], "id": "CVE-2026-20433", "lastModified": "2026-04-07T04:17:12.830", "metrics": {}, "published": "2026-04-07T04:17:12.830", "references": [{"source": "security@mediatek.com", "url": "https://corp.mediatek.com/product-security-bulletin/April-2026"}], "sourceIdentifier": "security@mediatek.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "security@mediatek.com", "type": "Primary"}]}

{}

{}