{"cve":"CVE-2026-20520","nvd":{"published":"2026-10-05T02:16:50.540","modified":"2026-10-08T14:32:52.177","status":"Analyzed","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 not needed for exploitation. Patch ID: MOLY01778988; Issue ID: MSV-8897.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-787"],"references":["https://www.mediatek.com/product-security-bulletin/October-2026"],"products":["mediatek:mt2716_firmware","mediatek:mt2735_firmware","mediatek:mt2737_firmware","mediatek:mt6813_firmware","mediatek:mt6815_firmware","mediatek:mt6833_firmware","mediatek:mt6835_firmware","mediatek:mt6853_firmware","mediatek:mt6855_firmware","mediatek:mt6858_firmware","mediatek:mt6873_firmware","mediatek:mt6875_firmware","mediatek:mt6877_firmware","mediatek:mt6878_firmware","mediatek:mt6879_firmware","mediatek:mt6880_firmware","mediatek:mt6881_firmware","mediatek:mt6883_firmware","mediatek:mt6885_firmware","mediatek:mt6886_firmware","mediatek:mt6889_firmware","mediatek:mt6890_firmware","mediatek:mt6891_firmware","mediatek:mt6893_firmware","mediatek:mt6895_firmware","mediatek:mt6896_firmware","mediatek:mt6897_firmware","mediatek:mt6899_firmware","mediatek:mt6980_firmware","mediatek:mt6982_firmware","mediatek:mt6983_firmware","mediatek:mt6985_firmware","mediatek:mt6986_firmware","mediatek:mt6988_firmware","mediatek:mt6989_firmware","mediatek:mt6990_firmware","mediatek:mt6991_firmware","mediatek:mt6993_firmware","mediatek:mt8668_firmware","mediatek:mt8676_firmware","mediatek:mt8678_firmware","mediatek:mt8695_firmware","mediatek:mt8696_firmware","mediatek:mt8755_firmware","mediatek:mt8771_firmware","mediatek:mt8775_firmware","mediatek:mt8791_firmware","mediatek:mt8791t_firmware","mediatek:mt8792_firmware","mediatek:mt8793_firmware"],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-20520","score":0.00228,"percentile":0.13441,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}