CVE-2026-92786
LightGBM through 4.7.0 Out-of-Bounds Write via Crafted Model
- State
- Published
- Severity
- 8.5 High
- Published
- Sep 16, 2026
- Updated
- Sep 21, 2026
- Reserved
- Sep 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.5 High | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
LightGBMlightgbm-org |
|
References
- GitHub Issue #7357issue-tracking
- https://github.com/lightgbm-org/LightGBMproduct
- RecomputeLeafDepths writes at the bit-inverted child value with no bounds checktechnical-description
- child and split arrays are parsed with only a length checktechnical-description
- VulnCheck Advisory: LightGBM through 4.7.0 Out-of-Bounds Write via Crafted Modelthird-party-advisory
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