CVE-2026-70638
Integer overflow in LLaMA-Android JNI causes heap corruption, DoS or RCE.
Is CVE-2026-70638 being exploited?
Not confirmed. CVE-2026-70638 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.21% probability of exploitation in the next 30 days.
How severe is CVE-2026-70638?
CVE-2026-70638 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-70638?
Not known from our data. No patch reference has been recorded for CVE-2026-70638, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-70638 affect?
CVE-2026-70638 affects llama.cpp builds b1886–b7445, LLaMA-Android JNI wrapper, Android apps using LLaMA-Android binding, Apps loading untrusted model files. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-70638?
Do not load untrusted models; restrict app privileges; apply upstream patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted n_seq_max in a model file or JNI call triggers integer overflow and heap buffer wrap, enabling denial of service or arbitrary code execution on Android apps using LLaMA-Android.
Immediate action required
- affected>= b1886 and <= b7445
- affected>= 0.9.0 and <= 0.17.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.