{"id":"CVE-2026-20521","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-20521","generatedAt":"2026-10-28T01:19:17.901Z","title":"In Video HAL, there is a possible escalation of privilege due to a missing bounds check.","description":"In Video HAL, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11375674; Issue ID: MSV-9571.","published":"2026-10-05T02:16:51.000Z","lastModified":"2026-10-08T15:46:51.000Z","status":"Analyzed","sourceIdentifier":"security@mediatek.com","cvss":{"version":"3.1","score":8.4,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-121"],"affected":["mediatek/mt8910 firmware","mediatek/mt2718 firmware","mediatek/mt6768 firmware","mediatek/mt6769 firmware","mediatek/mt6781 firmware","mediatek/mt6789 firmware","mediatek/mt6833 firmware","mediatek/mt6835 firmware","mediatek/mt6853 firmware","mediatek/mt6855 firmware","mediatek/mt6858 firmware","mediatek/mt6877 firmware","mediatek/mt6878 firmware","mediatek/mt6879 firmware","mediatek/mt6881 firmware","mediatek/mt6883 firmware","mediatek/mt6885 firmware","mediatek/mt6886 firmware","mediatek/mt6889 firmware","mediatek/mt6893 firmware","mediatek/mt6895 firmware","mediatek/mt6897 firmware","mediatek/mt6899 firmware","mediatek/mt6983 firmware","mediatek/mt6985 firmware","mediatek/mt6989 firmware","mediatek/mt6991 firmware","mediatek/mt6993 firmware","mediatek/mt8126 firmware","mediatek/mt8171 firmware","mediatek/mt8186 firmware","mediatek/mt8188 firmware","mediatek/mt8189 firmware","mediatek/mt8195 firmware","mediatek/mt8196 firmware","mediatek/mt8367 firmware","mediatek/mt8391 firmware","mediatek/mt8395 firmware","mediatek/mt8668 firmware","mediatek/mt8676 firmware","mediatek/mt8678 firmware","mediatek/mt8695 firmware","mediatek/mt8696 firmware","mediatek/mt8781 firmware","mediatek/mt8788e firmware","mediatek/mt8792 firmware","mediatek/mt8793 firmware","mediatek/mt8799 firmware"],"epss":{"score":0.00137,"percentile":0.03082,"date":"2026-10-26","history":[{"date":"2026-10-05","score":0.00133,"percentile":0.02385}]},"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 (0.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-05T12:15:08.000Z","detail":{"from":null,"score":"8.4","severity":"HIGH","fromSeverity":null},"summary":"Now scored CVSS 8.4 HIGH."},{"kind":"new","label":"New CVE","at":"2026-10-05T02:16:51.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-05T02:16:50.660Z"},"summary":"New CVE, high severity (CVSS 8.4)."}],"references":[{"url":"https://www.mediatek.com/product-security-bulletin/October-2026","tags":["Vendor Advisory"],"source":"security@mediatek.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-20521","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."}