{"id":"CVE-2026-20433","aliases":["A-480745371","ASB-A-480745371","EUVD-2026-19568","GHSA-5h6h-2wjp-jc72","M-MOLY01088681"],"status":"published","title":"In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead...","description":"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 privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.0031,"percentile":0.24142,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2026-04-07T03:25:32Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":":unknown:","fixed_in":["SoCVersion:2026-06-05"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"SoCVersion:0"},{"fixed":"SoCVersion:2026-06-05"}]}],"versions":["SoCVersion"]}],"products":[{"vendor":"mediatek","product":"mt2735_firmware"},{"vendor":"mediatek","product":"mt2737_firmware"},{"vendor":"mediatek","product":"mt6813_firmware"},{"vendor":"mediatek","product":"mt6833_firmware"},{"vendor":"mediatek","product":"mt6833p_firmware"},{"vendor":"mediatek","product":"mt6835_firmware"},{"vendor":"mediatek","product":"mt6835t_firmware"},{"vendor":"mediatek","product":"mt6853_firmware"},{"vendor":"mediatek","product":"mt6853t_firmware"},{"vendor":"mediatek","product":"mt6855_firmware"},{"vendor":"mediatek","product":"mt6855t_firmware"},{"vendor":"mediatek","product":"mt6873_firmware"},{"vendor":"mediatek","product":"mt6875_firmware"},{"vendor":"mediatek","product":"mt6875t_firmware"},{"vendor":"mediatek","product":"mt6877_firmware"},{"vendor":"mediatek","product":"mt6877t_firmware"},{"vendor":"mediatek","product":"mt6877tt_firmware"},{"vendor":"mediatek","product":"mt6878_firmware"},{"vendor":"mediatek","product":"mt6878m_firmware"},{"vendor":"mediatek","product":"mt6879_firmware"},{"vendor":"mediatek","product":"mt6880_firmware"},{"vendor":"mediatek","product":"mt6883_firmware"},{"vendor":"mediatek","product":"mt6885_firmware"},{"vendor":"mediatek","product":"mt6886_firmware"},{"vendor":"mediatek","product":"mt6889_firmware"},{"vendor":"mediatek","product":"mt6890_firmware"},{"vendor":"mediatek","product":"mt6891_firmware"},{"vendor":"mediatek","product":"mt6893_firmware"},{"vendor":"mediatek","product":"mt6895_firmware"},{"vendor":"mediatek","product":"mt6895tt_firmware"},{"vendor":"mediatek","product":"mt6896_firmware"},{"vendor":"mediatek","product":"mt6897_firmware"},{"vendor":"mediatek","product":"mt6899_firmware"},{"vendor":"mediatek","product":"mt6980_firmware"},{"vendor":"mediatek","product":"mt6980d_firmware"},{"vendor":"mediatek","product":"mt6983_firmware"},{"vendor":"mediatek","product":"mt6983t_firmware"},{"vendor":"mediatek","product":"mt6985_firmware"},{"vendor":"mediatek","product":"mt6985t_firmware"},{"vendor":"mediatek","product":"mt6989_firmware"},{"vendor":"mediatek","product":"mt6989t_firmware"},{"vendor":"mediatek","product":"mt6990_firmware"},{"vendor":"mediatek","product":"mt6991_firmware"},{"vendor":"mediatek","product":"mt8668_firmware"},{"vendor":"mediatek","product":"mt8673_firmware"},{"vendor":"mediatek","product":"mt8675_firmware"},{"vendor":"mediatek","product":"mt8676_firmware"},{"vendor":"mediatek","product":"mt8678_firmware"},{"vendor":"mediatek","product":"mt8755_firmware"},{"vendor":"mediatek","product":"mt8771_firmware"},{"vendor":"mediatek","product":"mt8775_firmware"},{"vendor":"mediatek","product":"mt8791_firmware"},{"vendor":"mediatek","product":"mt8791t_firmware"},{"vendor":"mediatek","product":"mt8792_firmware"},{"vendor":"mediatek","product":"mt8793_firmware"},{"vendor":"mediatek","product":"mt8795t_firmware"},{"vendor":"mediatek","product":"mt8797_firmware"},{"vendor":"mediatek","product":"mt8798_firmware"},{"vendor":"mediatek","product":"mt8863_firmware"},{"vendor":"mediatek","product":"mt8873_firmware"},{"vendor":"mediatek","product":"mt8883_firmware"},{"vendor":"mediatek","product":"mt8893_firmware"},{"vendor":"mediatek, inc.","product":"mediatek chipset"}],"references":[{"url":"https://corp.mediatek.com/product-security-bulletin/April-2026","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20433"},{"url":"https://github.com/advisories/GHSA-5h6h-2wjp-jc72"},{"url":"https://source.android.com/security/bulletin/2026-06-01","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-20433","description":"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 privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460.","status":"published","published":"2026-04-07T03:25:32.066Z","modified":"2026-11-02T17:15:14.579Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-787","CWE-787"],"updated_at":"2026-11-02T19:02:29.283836Z"}],"euvd":[{"id":"EUVD-2026-19568","description":"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 privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460.","status":"published","published":"2026-04-07T03:25:32Z","modified":"2026-11-02T17:15:14Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T05:08:39.764975Z"}],"ghsa":[{"id":"GHSA-5h6h-2wjp-jc72","title":"In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead...","description":"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 privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01088681; Issue ID: MSV-4460.","status":"published","published":"2026-04-07T06:30:27Z","modified":"2026-04-07T15:30:48Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:07:11.075264Z"}],"nvd":[{"id":"CVE-2026-20433","description":"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 privileges needed. User interaction is needed for exploitation. 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