{"affected":[{"defaultStatus":"unaffected","product":"llama.cpp","source":"CNA: VulnCheck","vendor":"ggml-org","versions":[{"lessThanOrEqual":"b7445","status":"affected","version":"b1886","versionType":"custom"},{"status":"unaffected","version":"5c0d18881e0e9794c96b2602736b758bac9d9388","versionType":"git"}]}],"cveId":"CVE-2026-70639","cwes":["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.","epss":{"date":"2026-11-08","percentile":0.09217,"score":0.00195},"exploits":[],"kev":null,"metrics":[{"score":6.8,"severity":"medium","source":"CNA: VulnCheck","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","version":"4.0"},{"score":5.5,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794146912806,"publishedAt":1786030650567,"references":[{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://github.com/ggml-org/llama.cpp/releases/tag/b7446"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388"},{"source":"CNA: VulnCheck","tags":["related"],"url":"https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/llama-cpp-b1886-b7445-null-pointer-dereference-dos-via-llama-android-cpp"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388"}],"revision":"40b8a8dfc7280362dc2f8f1879145246e8c01c06ea65c740b8faa01b794da815","sources":[{"modifiedAt":1794146912806,"name":"CNA: VulnCheck","retrievedAt":1794151323075,"url":"https://www.cve.org/CVERecord?id=CVE-2026-70639"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794151338232,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-70639"}],"ssvc":{"assessedAt":1786118060817,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"llama.cpp b1886–b7445 Null Pointer Dereference DoS via llama-android.cpp","updatedAt":1794151338232}