CVE-2026-70639

MEDIUM 5.5

llama.cpp b1886–b7445 Null Pointer Dereference DoS via llama-android.cpp

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-476
Vendor	ggml-org
Product	llama.cpp
Published	Aug 6, 2026
Last Updated	Aug 6, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

ggml-org / llama.cpp

b1886 ≤ b7445 0.9.0 ≤ 0.17.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/ggml-org/llama.cpp/releases/tag/b7446 github.com: https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388 github.com: https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches

Credits

Vladimir Tokarev (@G1ND1L4) - Vulnerability Research Tech Lead, Cyera Ofek Itach (@ofekitach) - Security Research Team Lead, Cyera