llama.cpp MTMD Multimodal GGUF File Parsing Integer Overflow Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to execute arbitrary code on affected installations of llama.cpp. User interaction is required to exploit this vulnerability in that the target must open a malicious file.
The specific flaw exists within the parsing of audio multimodal projector GGUF files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current process.
Additional Details
llama.cpp has issued an update to correct this vulnerability. More details can be found at:
https://github.com/ggml-org/llama.cpp/commit/e2e7a9b2d04e0404131e551243d4bd399ccfe606
Disclosure Timeline
- 2026-06-18 - Vulnerability reported to vendor
- 2026-11-13 - Coordinated public release of advisory
- 2026-11-13 - Advisory Updated
Credit
zent
