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CVE-2025-71439VulnerabilityPublished

llama.cpp before b5649 contains a heap out-of-bounds read vulnerability in llama_vocab::impl::print_info() that allows

Source GCVE Database

0
Authoritative record:CVE-2025-71439· Medium 6.8

Not known to be exploited · CVSS 6.8 Medium : upgrade to b5649 when convenient.

Data as of 27 Oct 2026, 04:17 UTC

CVSS 4.0 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in b5649
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade llama.cpp to b5649.

Affected software

ProductAffectedFixed in
ggml-orgllama.cppAffected
  • <b5649
Fixed in
  • b5649
GitHubllama.cpppkg:github/llama.cppOther threatsAffected
  • <b5649
Fixed in
  • b5649

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should avoid loading untrusted or crafted GGUF model files that could trigger this vulnerability.

Description

A heap out-of-bounds read vulnerability exists in llama.cpp before commit b5649 within the function llama_vocab::impl::print_info(). This flaw allows attackers to crash the model loading process by supplying a specially crafted GGUF model with an undersized tokenizer.ggml.tokens array, causing out-of-bounds access and application crash.

References

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