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CVE-2025-71439 Details

Description

llama.cpp before b5649 contains a heap out-of-bounds read vulnerability in llama_vocab::impl::print_info() that allows attackers to crash model loading via oversized special token IDs. Attackers can supply a crafted GGUF model with a short tokenizer.ggml.tokens array, causing llama-cli or llama-server to read past id_to_token and crash.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/ggml-org/llama.cpp/security/advisories/GHSA-g4cc-763q-h9h6	CISA-ADP
https://github.com/ggml-org/llama.cpp/blob/b5648/src/llama-vocab.cpp#L2771	[email protected]
https://github.com/ggml-org/llama.cpp/commit/c33fe8b8c4427202706b1434e9fc8ab5752c9cac	[email protected]
https://github.com/ggml-org/llama.cpp/pull/14145	[email protected]
https://github.com/ggml-org/llama.cpp/releases/tag/b5649	[email protected]
https://github.com/ggml-org/llama.cpp/security/advisories/GHSA-g4cc-763q-h9h6	[email protected]
https://www.vulncheck.com/advisories/llama-cpp-before-b5649-heap-out-of-bounds-read-via-llama-vocab-impl-print-info	[email protected]

see all 7 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

Date	Action	Recorded By
Nov 5, 2026	CVE Modified	CISA-ADP
Oct 28, 2026	CVE Translated	[email protected]
Oct 27, 2026	New CVE Received	[email protected]