Cloudanix VulnDB

CVE-2026-27940

High · 7.8

CVSS

7.8

EPSS

0.2%

Published

Mar 12, 2026

CISA due date

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The record

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. This is a bypass of a similar bug in the same file - CVE-2025-53630, but the fix overlooked some areas. This vulnerability is fixed in b8146.

Affected packages

Ecosystem Package Introduced Fixed

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