High severity7.8NVD Advisory· Published Sep 29, 2026
CVE-2026-102566
CVE-2026-102566
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.
Affected products
1- Range: <4.8.1
Patches
Vulnerability mechanics
References
5- github.com/OpenNMT/CTranslate2/blob/v4.8.0/src/models/model.ccnvd
- github.com/OpenNMT/CTranslate2/commit/d9b991e0700933a0c05373df8b52ed89cdcab96dnvd
- github.com/OpenNMT/CTranslate2/pull/2068nvd
- github.com/OpenNMT/CTranslate2/releases/tag/v4.8.1nvd
- www.vulncheck.com/advisories/ctranslate2-before-4.8.1-heap-buffer-overflow-via-model-binnvd
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