CVE-2026-70639 MEDIUM

CVE-2026-70639: llama.cpp b1886–b7445 Null Pointer Dereference DoS via llama-android.cpp

Vendor Ggml-Org
Product llama.cpp
Weakness CWE-476
Published August 6, 2026
Last update August 6, 2026

CVSS base score

6.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 6, 2026 CVE published
August 6, 2026 Record updated