CVE-2026-27940: llama.cpp is an inference of several LLM models in C/C++. Prior to b8146, the gguf_init_from_file_impl() in gguf.cpp is vulnerable to an Integer overflow, leading to an undersized heap allocation. ...

Added to the CISA Known Exploited Vulnerabilities catalog on 12 Mar 2026. Vendor: AI/ML. Product: LLM. CVSS score: 7.8.

llama.cpp is an inference of several LLM models in C/C++. Prior to b8146, the gguf_init_from_file_impl() in gguf.cpp is vulnerable to an Integer overflow, leading to an undersized heap allocation. Using the subsequent fread() writes 528+ bytes of attacker-controlled data past the buffer boundary....

Required action: Review and patch if applicable to your AI infrastructure.