CVE-2026-116816highCWE-129

CVE-2026-116816: high-severity vulnerability in ggml-org llama.cpp

llama.cpp b5899 before b10261 Heap Out-of-Bounds Write via plamo2 Tokenizer

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.5epss 0.1%
llama.cpp b5899 before b10261 contains a heap out-of-bounds write vulnerability in llm_tokenizer_plamo2::build that allows attackers to corrupt heap memory via crafted GGUF models. Attackers can supply BYTE-typed token text like <0x-1> whose negative parsed value writes token ids before the bytes_ buffer during model loading, causing crashes or potential code execution.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
ggml-org · llama.cpp
Related CVEs — ggml-org llama.cpp

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