{"id":"CVE-2026-20520","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":"none","cwe":["CWE-787"],"vendor":"MediaTek, Inc.","product":"MediaTek chipset","affected":["mediatek_chipset MT2716","mediatek_chipset MT2735","mediatek_chipset MT2737","mediatek_chipset MT6813","mediatek_chipset MT6815","mediatek_chipset MT6833","mediatek_chipset MT6835","mediatek_chipset MT6853","mediatek_chipset MT6855","mediatek_chipset MT6858","mediatek_chipset MT6873","mediatek_chipset MT6875","mediatek_chipset MT6877","mediatek_chipset MT6878","mediatek_chipset MT6879","mediatek_chipset MT6880","mediatek_chipset MT6881","mediatek_chipset MT6883","mediatek_chipset MT6885","mediatek_chipset MT6886","mediatek_chipset MT6889","mediatek_chipset MT6890","mediatek_chipset MT6891","mediatek_chipset MT6893","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 MT8668","mediatek_chipset MT8676","mediatek_chipset MT8678","mediatek_chipset MT8695","mediatek_chipset MT8696","mediatek_chipset MT8755","mediatek_chipset MT8771","mediatek_chipset MT8775","mediatek_chipset MT8791","mediatek_chipset MT8791T","mediatek_chipset MT8792","mediatek_chipset MT8793"],"published":"2026-10-05","updated":"2026-10-05","sourceUpdated":"2026-10-05T02:16:50.540","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-20520","references":[{"url":"https://www.mediatek.com/product-security-bulletin/October-2026","label":"security@mediatek.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-05T02:10:36.196Z","slug":"CVE-2026-20520","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: MOLY01778988; Issue ID: MSV-8897.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}