{"id":"CVE-2026-20433","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-20433","generatedAt":"2026-10-28T09:41:54.850Z","title":"In Modem, there is a possible out of bounds write due to a missing bounds check.","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.","published":"2026-04-07T04:17:13.000Z","lastModified":"2026-06-17T10:17:26.000Z","status":"Analyzed","sourceIdentifier":"security@mediatek.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["mediatek/mt2735 firmware","mediatek/mt2737 firmware","mediatek/mt6813 firmware","mediatek/mt6833 firmware","mediatek/mt6833p firmware","mediatek/mt6835 firmware","mediatek/mt6835t firmware","mediatek/mt6853 firmware","mediatek/mt6853t firmware","mediatek/mt6855 firmware","mediatek/mt6855t firmware","mediatek/mt6873 firmware","mediatek/mt6875 firmware","mediatek/mt6875t firmware","mediatek/mt6877 firmware","mediatek/mt6877t firmware","mediatek/mt6877tt firmware","mediatek/mt6878 firmware","mediatek/mt6878m firmware","mediatek/mt6879 firmware","mediatek/mt6880 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/mt6895tt firmware","mediatek/mt6896 firmware","mediatek/mt6897 firmware","mediatek/mt6899 firmware","mediatek/mt6980 firmware","mediatek/mt6980d firmware","mediatek/mt6983 firmware","mediatek/mt6983t firmware","mediatek/mt6985 firmware","mediatek/mt6985t firmware","mediatek/mt6989 firmware","mediatek/mt6989t firmware","mediatek/mt6990 firmware","mediatek/mt6991 firmware","mediatek/mt8668 firmware","mediatek/mt8673 firmware","mediatek/mt8675 firmware","mediatek/mt8676 firmware","mediatek/mt8678 firmware","mediatek/mt8755 firmware","mediatek/mt8771 firmware","mediatek/mt8775 firmware","mediatek/mt8791 firmware","mediatek/mt8791t firmware","mediatek/mt8792 firmware","mediatek/mt8793 firmware","mediatek/mt8795t firmware","mediatek/mt8797 firmware","mediatek/mt8798 firmware","mediatek/mt8863 firmware","mediatek/mt8873 firmware"],"epss":{"score":0.00341,"percentile":0.27487,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://corp.mediatek.com/product-security-bulletin/April-2026","tags":["Vendor Advisory"],"source":"security@mediatek.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-20433","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}