CVE-2026-70639: llama.cpp builds b1886 through b7445 contain a null pointer dereference vulnerability in the LLaMA-Android JNI wrapper…
CVE-2026-70639 · Severity: medium · CVSS 5.5 · Published 2026-08-06
llama.cpp builds b1886 through b7445 contain a null pointer dereference vulnerability in the LLaMA-Android JNI wrapper where the bench_1model() function fails to validate the model context pointer before dereferencing it. Attackers can supply a malicious, corrupt, or truncated model file to trigger a null context condition, causing a SIGSEGV crash that terminates the Android application process and results in denial of service.
No. Junglewise Threat Intelligence has no report of CVE-2026-70639 being exploited in the wild.
How severe is CVE-2026-70639?
Medium severity, with a CVSS score of 5.5, published 6 August 2026.
Which products and versions are affected?
GGML Llama.Cpp. The advisory does not name versions.
Is there a fix for CVE-2026-70639?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-70639?
Check whether you run GGML Llama.Cpp. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.