Vulnerability Details CVE-2025-52566
llama.cpp is an inference of several LLM models in C/C++. Prior to version b5721, there is a signed vs. unsigned integer overflow in llama.cpp's tokenizer implementation (llama_vocab::tokenize) (src/llama-vocab.cpp:3036) resulting in unintended behavior in tokens copying size comparison. Allowing heap-overflowing llama.cpp inferencing engine with carefully manipulated text input during tokenization process. This issue has been patched in version b5721.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 13.2%
CVSS Severity
CVSS v3 Score 8.6
References