CVE-2026-70639CWE-476

CVE-2026-70639

Medium · published August 7, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00195 · 8.7th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-08-07T02:18Z
Affected products (1)
ProductVersionsFixed in
ggml/llama.cpp≥ b1886, ≤ b7445—
References (4)
https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches · [email protected]https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388 · [email protected]https://github.com/ggml-org/llama.cpp/releases/tag/b7446 · [email protected]https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-null-pointer-dereference-dos-via-llama-android-cpp · [email protected]
EPSS history
Timeline
  • 06 AUG 15:37Z
    llama.cpp b1886–b7445 Null Pointer Dereference DoS via llama-android.cpp
    cvelistv5