CVE-2026-33298
HIGHllama.cpp has a Heap Buffer Overflow via Integer Overflow in GGUF Tensor Parsing
Title source: cnaDescription
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 dimensions. This causes `ggml_nbytes` to return a significantly smaller size than required (e.g., 4MB instead of Exabytes), leading to a heap-based buffer overflow when the application subsequently processes the tensor. This vulnerability allows potential Remote Code Execution (RCE) via memory corruption. b7824 contains a fix.
Scores
CVSS v3
7.8
EPSS
0.0001
EPSS Percentile
2.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-122
CWE-190
Status
published
Products (1)
ggml-org/llama.cpp
< b7824
Published
Mar 24, 2026
Tracked Since
Mar 24, 2026