{"id":"CVE-2026-102566","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102566","generatedAt":"2026-10-27T23:51:24.093Z","title":"CTranslate2 before 4.8.1 contains a heap-based buffer overflow in the binary model loader that fails to validate payload length against allocated buffer size.","description":"CTranslate2 before 4.8.1 contains a heap-based buffer overflow in the binary model loader that fails to validate payload length against allocated buffer size. Attackers can craft malicious model files with oversized payload lengths to write past heap allocation boundaries, causing crashes or arbitrary code execution.","published":"2026-09-29T15:17:18.000Z","lastModified":"2026-09-30T17:23:09.000Z","status":"Awaiting Analysis","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.5,"severity":"HIGH","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-787"],"affected":[],"epss":{"score":0.00148,"percentile":0.03981,"date":"2026-10-26","history":[{"date":"2026-09-30","score":0.00148,"percentile":0.03418}]},"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 (0.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-29T15:17:18.000Z","detail":{"score":"8.5","severity":"HIGH","publishedAt":"2026-09-29T15:17:18.003Z"},"summary":"New CVE, high severity (CVSS 8.5)."}],"references":[{"url":"https://github.com/OpenNMT/CTranslate2","source":"disclosure@vulncheck.com"},{"url":"https://github.com/OpenNMT/CTranslate2/blob/v4.8.0/src/models/model.cc#L656-L657","source":"disclosure@vulncheck.com"},{"url":"https://github.com/OpenNMT/CTranslate2/commit/d9b991e0700933a0c05373df8b52ed89cdcab96d","source":"disclosure@vulncheck.com"},{"url":"https://github.com/OpenNMT/CTranslate2/pull/2068","source":"disclosure@vulncheck.com"},{"url":"https://github.com/OpenNMT/CTranslate2/releases/tag/v4.8.1","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/ctranslate2-before-4.8.1-heap-buffer-overflow-via-model-bin","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102566","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."}