---
id: CVE-2024-58400
title: llama.cpp before b3701 Out-of-Bounds Read in llama_decode via Token IDs
summary: >-
  llama.cpp before b3701 contains an out-of-bounds read vulnerability in
  llama_decode_internal and llama_encode_internal that allows remote
  unauthenticated attackers to read memory by supplying unvalidated token IDs.
  Attackers can send int…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-129
vendor: ggml-org
product: llama.cpp
affected:
  - llama.cpp < b3701
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-27T13:46:15.115363Z'
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T14:14:21.519Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-58400'
references:
  - url: 'https://github.com/ggml-org/llama.cpp/pull/9359'
  - url: >-
      https://github.com/ggml-org/llama.cpp/commit/faf69d4237c9ae4d7f572b4674d1002463e8acd3
  - url: >-
      https://github.com/ggml-org/llama.cpp/commit/eae597182cb61bbde0b26e7cec5999d28b9327fe
  - url: >-
      https://github.com/ggml-org/llama.cpp/blob/b3681/examples/server/server.cpp#L789
  - url: 'https://github.com/ggml-org/llama.cpp/releases/tag/b3701'
    label: llama.cpp b3701 Release Notes
  - url: >-
      https://www.vulncheck.com/advisories/llama-cpp-before-b3701-out-of-bounds-read-in-llama-decode-via-token-ids
    label: >-
      VulnCheck Advisory: llama.cpp before b3701 Out-of-Bounds Read in
      llama_decode via Token IDs
tags:
  - cve.org
epss: 0.00422
epssPercentile: 0.36642
ingestedAt: '2026-10-27T16:11:59.445Z'
---

## Overview

llama.cpp before b3701 contains an out-of-bounds read vulnerability in llama_decode_internal and llama_encode_internal that allows remote unauthenticated attackers to read memory by supplying unvalidated token IDs. Attackers can send integer-array prompts to the llama-server /completion endpoint with IDs outside 0 to n_vocab to read embedding memory out of bounds or crash the process.

## Affected

- `llama.cpp < b3701`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.