What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-10-29
• Weakness: CWE-476

Description

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.

Affected products

• ggml-org llama.cpp: from b1886 through b7445
• ggml-org llama.cpp: from b1886 through b7445

References

• https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches
• https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388
• https://github.com/ggml-org/llama.cpp/releases/tag/b7446
• https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-null-pointer-dereference-dos-via-llama-android-cpp

Get alerted when CVE-2026-70639 or the next vulnerability affects your stack