Medium severity5.5NVD Advisory· Published Oct 27, 2026
CVE-2025-71439
CVE-2025-71439
Description
llama.cpp before b5649 contains a heap out-of-bounds read vulnerability in llama_vocab::impl::print_info() that allows attackers to crash model loading via oversized special token IDs. Attackers can supply a crafted GGUF model with a short tokenizer.ggml.tokens array, causing llama-cli or llama-server to read past id_to_token and crash.
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/ggml-org/llama.cpp/blob/b5648/src/llama-vocab.cppnvd
- github.com/ggml-org/llama.cpp/commit/c33fe8b8c4427202706b1434e9fc8ab5752c9cacnvd
- github.com/ggml-org/llama.cpp/pull/14145nvd
- github.com/ggml-org/llama.cpp/releases/tag/b5649nvd
- github.com/ggml-org/llama.cpp/security/advisories/GHSA-g4cc-763q-h9h6nvd
- www.vulncheck.com/advisories/llama-cpp-before-b5649-heap-out-of-bounds-read-via-llama-vocab-impl-print-infonvd
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