CVE-2025-71439
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
ProductGgml-org Llama.cpp
PublishedOct 27, 2026
First seenOct 27, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- ggml-org llama.cppb5649 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ggml-org llama.cpp | v < b5649 | b5649 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.