CVE-2026-70638
highpriority · track · 10EPSS 0.002 · 14 %ileexploit · PoCEUUSEPSS · scored 2026-10-27
llama.cpp builds b1886 through b7445 contain an integer overflow vulnerability in the LLaMA-Android JNI wrapper where the new_1batch() function multiplies sizeof(llama_seq_id) by an attacker-controlled n_seq_max parameter without overflow validation, causing heap buffer allocation to wrap and allocate insufficient memory. Attackers can exploit this by providing a crafted n_seq_max value through a malicious model file or JNI call to trigger heap corruption and achieve denial of service or arbitrary code execution on Android applications using the LLaMA-Android binding.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (3)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (12)
External citations — patches, advisories, analysis.
- https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patchescnnvd
- https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388cnnvd
- https://github.com/ggml-org/llama.cpp/releasesPatchcnnvd
- https://github.com/ggml-org/llama.cpp/releases/tag/b7446cnnvd
- https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patchesenisa_euvd
- https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388enisa_euvd
- https://github.com/ggml-org/llama.cpp/releases/tag/b7446enisa_euvd
- https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-integer-overflow-via-new-1batch-in-llama-android-cppenisa_euvd
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