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Back to active CVEs
Medium · CVSS 6.8CVE-2025-71439

llama.cpp before b5649 Heap Out-of-Bounds Read via llama_vocab::impl::print_infoCVE-2025-71439

Answer in brief

CVE-2025-71439 records a Medium severity (CVSS 6.8) vulnerability in llama.cpp before b5649 Heap Out-of-Bounds Read via llama_vocab::impl::print_info. The current sources do not mark it as known exploited. The current feed maps ggml-org/llama.cpp (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 27, 2026Updated Oct 27, 2026Source checked Oct 27, 2026First seen by HOL Oct 27, 2026Material review Oct 27, 2026
Upstream Advisory

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-125
Source
CVE List V5
Source checked
Oct 27, 2026
References
6 linked sources
Open source record

Key facts

Risk
Medium · CVSS 6.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ggml-org/llama.cpp (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ggml-org/llama.cppgeneric>=0 <b5649b5649

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ggml-org/llama.cpp.
  2. 2Review the reported fix. Update ggml-org/llama.cpp to b5649 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 27, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • llama.cpp before b2731 Out-of-Bounds Read via GGUF Tensor OffsetsSame ggml-org/llama.cpp package
  • llama.cpp before b3701 Out-of-Bounds Read in llama_decode via Token IDsSame ggml-org/llama.cpp package
  • llama.cpp b5899 before b10261 Heap Out-of-Bounds Write via plamo2 TokenizerSame ggml-org/llama.cpp package
  • llama.cpp b10398 before b11301 Integer Overflow in gguf_init_from_readerSame ggml-org/llama.cpp package
  • llama.cpp b5854 before b11275 Integer Overflow in gguf_init_from_readerSame ggml-org/llama.cpp package
  • Tencent RapidJSON Regex stream.h Take out-of-boundsAlso CWE-125