Vulnerability details
CVE-2026-92786
lightgbm-org LightGBM
LightGBM through 4.7.0 Out-of-Bounds Write via Crafted Model
CVSS 4.0
8.5High
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.5High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| lightgbm-org | LightGBM | v ≤ 4.7.0 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://github.com/lightgbm-org/LightGBM/issues/7357 issue-tracking
- https://github.com/lightgbm-org/LightGBM product
- https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/include/LightGBM/tree.h#L691-L698 technical-description
- https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/src/io/tree.cpp#L750-L766 technical-description
- https://www.vulncheck.com/advisories/lightgbm-through-4.7.0-out-of-bounds-write-via-crafted-model third-party-advisory
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Details
- Published
- 2026-09-17
- Last updated
- 2026-09-21
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.18%
Probability of exploitation in 30 days
8.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-787Out-of-bounds Write