{"id":"CVE-2026-20585","title":"In Modem, there is a possible out of bounds write due to a missing bounds check","summary":"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 pr…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"adp","cwe":["CWE-787"],"vendor":"MediaTek, Inc.","product":"MediaTek chipset","affected":["mediatek_chipset MT2716","mediatek_chipset MT2718","mediatek_chipset MT2737","mediatek_chipset MT6813","mediatek_chipset MT6815","mediatek_chipset MT6835","mediatek_chipset MT6858","mediatek_chipset MT6878","mediatek_chipset MT6879","mediatek_chipset MT6881","mediatek_chipset MT6886","mediatek_chipset MT6895","mediatek_chipset MT6896","mediatek_chipset MT6897","mediatek_chipset MT6899","mediatek_chipset MT6980","mediatek_chipset MT6982","mediatek_chipset MT6983","mediatek_chipset MT6985","mediatek_chipset MT6986","mediatek_chipset MT6988","mediatek_chipset MT6989","mediatek_chipset MT6990","mediatek_chipset MT6991","mediatek_chipset MT6993","mediatek_chipset MT8186","mediatek_chipset MT8188","mediatek_chipset MT8189","mediatek_chipset MT8195","mediatek_chipset MT8196","mediatek_chipset MT8367","mediatek_chipset MT8391","mediatek_chipset MT8676","mediatek_chipset MT8678"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-11-02T00:00:00+00:00"},"published":"2026-11-02","updated":"2026-11-03","sourceUpdated":"2026-11-03T04:55:50.259Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-20585","references":[{"url":"https://www.mediatek.com/product-security-bulletin/November-2026"}],"tags":["cve.org"],"epss":0.00216,"epssPercentile":0.12162,"ingestedAt":"2026-11-05T19:30:42.908Z","slug":"CVE-2026-20585","body":"## Overview\n\nIn 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 not needed for exploitation. Patch ID: MOLY01338165; Issue ID: MSV-9660.\n\n## Affected\n\n- `mediatek_chipset MT2716`\n- `mediatek_chipset MT2718`\n- `mediatek_chipset MT2737`\n- `mediatek_chipset MT6813`\n- `mediatek_chipset MT6815`\n- `mediatek_chipset MT6835`\n- `mediatek_chipset MT6858`\n- `mediatek_chipset MT6878`\n- `mediatek_chipset MT6879`\n- `mediatek_chipset MT6881`\n- `mediatek_chipset MT6886`\n- `mediatek_chipset MT6895`\n- `mediatek_chipset MT6896`\n- `mediatek_chipset MT6897`\n- `mediatek_chipset MT6899`\n- `mediatek_chipset MT6980`\n- `mediatek_chipset MT6982`\n- `mediatek_chipset MT6983`\n- `mediatek_chipset MT6985`\n- `mediatek_chipset MT6986`\n- `mediatek_chipset MT6988`\n- `mediatek_chipset MT6989`\n- `mediatek_chipset MT6990`\n- `mediatek_chipset MT6991`\n- `mediatek_chipset MT6993`\n- `mediatek_chipset MT8186`\n- `mediatek_chipset MT8188`\n- `mediatek_chipset MT8189`\n- `mediatek_chipset MT8195`\n- `mediatek_chipset MT8196`\n- `mediatek_chipset MT8367`\n- `mediatek_chipset MT8391`\n- `mediatek_chipset MT8676`\n- `mediatek_chipset MT8678`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}