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.
Published: 2026-10-27
Score: 6.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Advisories

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History

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
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.
Title llama.cpp before b5649 Heap Out-of-Bounds Read via llama_vocab::impl::print_info
First Time appeared Ggml
Ggml llama.cpp
Weaknesses CWE-125
CPEs cpe:2.3:a:ggml:llama.cpp:*:*:*:*:*:*:*:*
Vendors & Products Ggml
Ggml llama.cpp
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Ggml Llama.cpp
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-27T00:33:57.956Z

Reserved: 2026-10-27T00:10:21.736Z

Link: CVE-2025-71439

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-27T01:19:03.470

Modified: 2026-10-27T01:19:03.470

Link: CVE-2025-71439

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T06:30:12Z

Weaknesses