{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20455", "assignerOrgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374", "state": "PUBLISHED", "assignerShortName": "MediaTek", "dateReserved": "2025-11-03T01:30:59.014Z", "datePublished": "2026-06-01T03:20:12.838Z", "dateUpdated": "2026-06-02T03:55:41.765Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374", "shortName": "MediaTek", "dateUpdated": "2026-06-01T03:20:12.838Z"}, "descriptions": [{"lang": "en", "value": "In geniezone, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10873936; Issue ID: MSV-6784."}], "affected": [{"vendor": "MediaTek, Inc.", "product": "MediaTek chipset", "defaultStatus": "unaffected", "versions": [{"version": "MT6739", "status": "affected"}, {"version": "MT6761", "status": "affected"}, {"version": "MT6765", "status": "affected"}, {"version": "MT6768", "status": "affected"}, {"version": "MT6781", "status": "affected"}, {"version": "MT6789", "status": "affected"}, {"version": "MT6835", "status": "affected"}, {"version": "MT6853", "status": "affected"}, {"version": "MT6855", "status": "affected"}, {"version": "MT6877", "status": "affected"}, {"version": "MT6878", "status": "affected"}, {"version": "MT6879", "status": "affected"}, {"version": "MT6883", "status": "affected"}, {"version": "MT6885", "status": "affected"}, {"version": "MT6886", "status": "affected"}, {"version": "MT6889", "status": "affected"}, {"version": "MT6893", "status": "affected"}, {"version": "MT6895", "status": "affected"}, {"version": "MT6897", "status": "affected"}, {"version": "MT6899", "status": "affected"}, {"version": "MT6983", "status": "affected"}, {"version": "MT6985", "status": "affected"}, {"version": "MT6989", "status": "affected"}, {"version": "MT6991", "status": "affected"}, {"version": "MT8673", "status": "affected"}, {"version": "MT8765", "status": "affected"}, {"version": "MT8766", "status": "affected"}, {"version": "MT8768", "status": "affected"}, {"version": "MT8781", "status": "affected"}, {"version": "MT8786", "status": "affected"}, {"version": "MT8788", "status": "affected"}, {"version": "MT8791T", "status": "affected"}, {"version": "MT8793", "status": "affected"}, {"version": "MT8797", "status": "affected"}, {"version": "MT8798", "status": "affected"}, {"version": "MT8910", "status": "affected"}]}], "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/June-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": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-06-01T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-20455"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-02T03:55:41.765Z"}}]}}