Buffer overflow in Ggml Llama.cpp
CVE-2026-33298
llama.cpp is an inference of several LLM models in C/C++. Prior to b7824, an integer overflow vulnerability in the `ggml_nbytes` function allows an attacker to bypass memory validation by crafting a GGUF file with specific tensor dimension…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (5.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Ggml Llama.cpp
- Ggml-org Llama.cpp — versions < b7824
Weakness classification (CWE)
References
- https://github.com/ggml-org/llama.cpp/security/advisories/GHSA-96jg-mvhq-q7q7 (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- https://github.com/ggml-org/llama.cpp/releases/tag/b7824 (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-33298?
- CVE-2026-33298 is a high-severity vulnerability in Ggml Llama.cpp, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-03-24.
- How severe is CVE-2026-33298?
- High severity. CVSS v3 base score is 7.8 out of 10.