CVE-2026-20531

{"id": "CVE-2026-20531", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20531", "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": 8.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/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"}, "impactScore": 5.9, "exploitabilityScore": 2.5}]}, "affected": [{"source": "security@mediatek.com", "affectedData": [{"vendor": "MediaTek, Inc.", "product": "MediaTek chipset", "versions": [{"status": "affected", "version": "MT6899"}, {"status": "affected", "version": "MT6993"}, {"status": "affected", "version": "MT8668"}, {"status": "affected", "version": "MT8781"}, {"status": "affected", "version": "MT8793"}, {"status": "affected", "version": "MT8910"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-05T02:16:51.907", "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-416"}]}], "descriptions": [{"lang": "en", "value": "In apu, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11249016; Issue ID: MSV-9169."}], "lastModified": "2026-10-09T14:50:56.130", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A05E635E-9559-4899-A7BA-A74EB6501D1C"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "8C81BC81-1358-4005-8D35-92428D052A65"}], "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: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:mt8781_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7E2280E5-F903-4541-8404-9F789CEFF172"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "533284E5-C3AF-48D3-A287-993099DB2E41"}], "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"}], "sourceIdentifier": "security@mediatek.com"}