CVE-2026-92786 LightGBM through 4.7.0 Out-of-Bounds Write via Crafted Model
Attackers can achieve arbitrary code execution or denial of service by crafting malicious model files that trigger out-of-bounds writes in LightGBM.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-92786?
CVE-2026-92786 is a high-severity memory corruption vulnerability in lightgbm-org LightGBM, published on 16 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
LightGBM through 4.7.0 fails to validate child and split array values when parsing text models, allowing attackers to write out-of-bounds memory during SHAP prediction. Attackers can craft malicious model files with invalid node references that trigger out-of-bounds writes at attacker-chosen offsets in the leaf_depth_ buffer during feature contribution computation.
Weakness: CWE-787
Which versions are affected by CVE-2026-92786?
How do I fix CVE-2026-92786?
No fix has been published for CVE-2026-92786 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-92786 being exploited?
There is no known exploitation of CVE-2026-92786 in the wild and no public exploit code.
Sources
Also known as GHSA-fhjh-xqqj-cjf5.