CVE-2026-116816：llama.cpp b5899 前版本的 plamo2 Tokenizer 造成堆外界寫入漏洞
CVE-2026-116816 - llama.cpp b5899 before b10261 Heap Out-of-Bounds Write via plamo2 Tokenizer
導語：llama.cpp 在 b5899 版至 b10261 版之間存在堆外界寫入漏洞，攻擊者可透過造假 GGUF 模型造成程式崩潰或執行任意程式。
- 漏洞範圍：
llm_tokenizer_plamo2::build中的負數 token 解析導致堆記憶體被覆寫。
此漏洞可導致模型崩潰或執行任意程式，需即時升級至 b10261 版本並避免載入未驗證的 GGUF 模型。
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.
Impact
Affected Products
The following products are affected by CVE-2026-116816
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
| ID | Vendor | Product | Action |
|---|---|---|---|
| 1 | Ggml-org | llama.cpp |
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 |
Update llama.cpp to a version that addresses the heap out-of-bounds write vulnerability.
- Update llama.cpp to a version including commit b10261.
- Avoid loading untrusted GGUF models.
- Validate token text input.
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CVE-2026-116816 vulnerability anywhere in the article.
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