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Patch ID: MOLY01406170; Issue ID: MSV-4461."}], "id": "CVE-2026-20432", "lastModified": "2026-04-10T19:57:16.573", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-04-07T04:17:12.413", "references": [{"source": "security@mediatek.com", "tags": ["Vendor Advisory"], "url": "https://corp.mediatek.com/product-security-bulletin/April-2026"}], "sourceIdentifier": "security@mediatek.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "security@mediatek.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT2735"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT2737"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6779"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6781"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6783"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6785"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6789"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6813"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6815"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6833"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6835"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6853"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6855"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6873"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6875"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6877"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6878"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6879"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6880"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6883"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6885"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6886"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6889"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6890"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6891"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6893"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6895"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6896"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6897"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6899"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6980"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6983"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6985"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6989"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6990"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6991"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT6993"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8668"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8673"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8675"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8676"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8678"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8755"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8771"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8775"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8781"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8789"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8791"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8791T"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8792"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8793"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8795T"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8797"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8798"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8863"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8873"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8883"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "MT8893"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "MediaTek chipset", "source": "cna", "vendor": "MediaTek, Inc."}, "product": "mediatek_chipset", "vendor": "mediatek,_inc."}], "analysis": {"en": {"generated_at": "2026-04-07T20:37:39.446147+00:00", "value": {"mitigation_remediation": ["Apply the vendor patch MOLY01406170 to the device\u2019s firmware", "Verify after the update that the firmware version matches the patched release", "Limit device connectivity to known authorized base stations to reduce exposure", "Monitor device logs for connections to unfamiliar or unexpected base stations", "Report suspected exploitation attempts to the vendor to aid rapid response"], "summary": {"action": "Apply Patch", "impact": "Remote privilege escalation"}, "threat_synthesis": {"affected_systems": "The vulnerability affects all MediaTek chipset devices whose modem firmware has not been updated with the vendor\u2011issued patch (Patch ID: MOLY01406170). Any firmware releases issued before the April\u202f2026 security bulletin are potentially impacted.", "description_and_impact": "The Modem firmware for MediaTek chipsets contains a missing bounds check that allows an out\u2011of\u2011bounds write. This flaw can corrupt memory locations and, if triggered, grants elevated privileges to an entity that controls a rogue base station. Remote exploitation requires a user equipment (UE) to connect to a malicious cell tower; no additional execution privileges are needed, though user interaction with the network is required.", "risk_and_exploitability": "The CVSS score of 8 indicates a high severity, while the EPSS score of less than 1\u202f% suggests a low current probability of exploitation. Exploitation is only possible when the target device establishes a connection with an attacker\u2011controlled base station, making the attack path dependent on the deployment of a rogue tower and the device\u2019s network choice. No exploitation evidence is present in the CVE data, but the combination of remote attack capability and privilege escalation warrants careful assessment."}}}}, "created": "2026-04-07T09:36:24.336102+00:00", "title": "Modem Out\u2010of\u2011Bounds Write Leading to Remote Privilege Escalation", "updated": "2026-04-08T19:50:11.582960+00:00", "vendors": ["mediatek,_inc.", "mediatek,_inc.$PRODUCT$mediatek_chipset"]}