CVE-2025-71439 llama.cpp before b5649 Heap Out-of-Bounds Read via llama_vocab::impl::print_info
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2025-71439?
CVE-2025-71439 is a medium-severity vulnerability in ggml-org llama.cpp, published on 27 Oct 2026.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2025-71439?
How do I fix CVE-2025-71439?
No fix has been published for CVE-2025-71439 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-71439 being exploited?
There is no known exploitation of CVE-2025-71439 in the wild and no public exploit code.
Sources
Also known as GHSA-4qpr-vwfh-qwp4, GHSA-g4cc-763q-h9h6, UBUNTU-CVE-2025-71439.