{"id":"CVE-2026-20528","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-20528","generatedAt":"2026-10-28T10:37:31.581Z","title":"In ccci, there is a possible out of bounds write and read due to a missing bounds check.","description":"In ccci, there is a possible out of bounds write and read due to a missing bounds check. This could lead to local information disclosure, memory corruption, crashes, or privilege escalation if a malicious actor has already obtained the System privilege. User interaction is needed for exploitation. Patch ID: ALPS11428950 (Note: For MT6880, MT6890) / ALPS10563453 (Note: For MT6980D, MT6990, MT6986, MT6986D, MT6813, MT6988) / AUTO00858766 (Note: For MT2735, MT2737); Issue ID: MSV-9893.","published":"2026-10-05T02:16:52.000Z","lastModified":"2026-10-09T15:03:39.000Z","status":"Analyzed","sourceIdentifier":"security@mediatek.com","cvss":{"version":"3.1","score":6.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["mediatek/mt2735 firmware","mediatek/mt2737 firmware","mediatek/mt6813 firmware","mediatek/mt6880 firmware","mediatek/mt6890 firmware","mediatek/mt6980d firmware","mediatek/mt6986 firmware","mediatek/mt6986d firmware","mediatek/mt6988 firmware","mediatek/mt6990 firmware"],"epss":{"score":0.00119,"percentile":0.01747,"date":"2026-10-27","history":[{"date":"2026-10-05","score":0.00119,"percentile":0.01586}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-05T12:15:08.000Z","detail":{"from":null,"score":"6.7","severity":"MEDIUM","fromSeverity":null},"summary":"Now scored CVSS 6.7 MEDIUM."},{"kind":"new","label":"New CVE","at":"2026-10-05T02:16:52.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-05T02:16:51.520Z"},"summary":"New CVE, medium severity (CVSS 6.7)."}],"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-2026-20528","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."}