CVE-2026-20529

{"id": "CVE-2026-20529", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20529", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-05T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.8}]}, "affected": [{"source": "security@mediatek.com", "affectedData": [{"vendor": "MediaTek, Inc.", "product": "MediaTek chipset", "versions": [{"status": "affected", "version": "MT6761"}, {"status": "affected", "version": "MT6765"}, {"status": "affected", "version": "MT6768"}, {"status": "affected", "version": "MT6781"}, {"status": "affected", "version": "MT6853"}, {"status": "affected", "version": "MT6858"}, {"status": "affected", "version": "MT6881"}, {"status": "affected", "version": "MT6893"}, {"status": "affected", "version": "MT6989"}, {"status": "affected", "version": "MT6991"}, {"status": "affected", "version": "MT6993"}, {"status": "affected", "version": "MT8171"}, {"status": "affected", "version": "MT8186"}, {"status": "affected", "version": "MT8188"}, {"status": "affected", "version": "MT8189"}, {"status": "affected", "version": "MT8196"}, {"status": "affected", "version": "MT8766"}, {"status": "affected", "version": "MT8768"}, {"status": "affected", "version": "MT8775"}, {"status": "affected", "version": "MT8781"}, {"status": "affected", "version": "MT8788E"}, {"status": "affected", "version": "MT8791T"}, {"status": "affected", "version": "MT8792"}, {"status": "affected", "version": "MT8796"}, {"status": "affected", "version": "MT8799"}, {"status": "affected", "version": "MT8883"}, {"status": "affected", "version": "MT8893"}, {"status": "affected", "version": "MT8910"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-05T02:16:51.640", "references": [{"url": "https://www.mediatek.com/product-security-bulletin/October-2026", "tags": ["Vendor Advisory"], "source": "security@mediatek.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@mediatek.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In battery, 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: ALPS11276677; Issue ID: MSV-9217."}], "lastModified": "2026-10-09T15:02:40.510", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6761_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2493FB05-7723-4CDD-AC2A-8B21C4285436"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "F726F486-A86F-4215-AD93-7A07A071844A"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt6765_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43327018-578C-4997-81B9-6DBD3679E40C"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "43E779F6-F0A0-4153-9A1D-B715C3A2F80E"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": 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