{"id":"CVE-2026-92786","state":"PUBLISHED","title":"LightGBM through 4.7.0 Out-of-Bounds Write via Crafted Model","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.","publishedAt":"2026-09-16T20:32:43.282Z","updatedAt":"2026-09-21T15:44:46.726Z","severity":{"score":8.5,"label":"High","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["lightgbm-org LightGBM"],"affected":[{"vendor":"lightgbm-org","product":"LightGBM","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.7.0","versionType":"semver"}]}],"references":["https://github.com/lightgbm-org/LightGBM/issues/7357","https://github.com/lightgbm-org/LightGBM","https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/include/LightGBM/tree.h#L691-L698","https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/src/io/tree.cpp#L750-L766","https://www.vulncheck.com/advisories/lightgbm-through-4.7.0-out-of-bounds-write-via-crafted-model"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92786.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92786","state":"PUBLISHED","datePublished":"2026-09-16T20:32:43.282Z","dateUpdated":"2026-09-21T15:44:46.726Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-16T19:31:51.976Z"},"containers":{"cna":{"title":"LightGBM through 4.7.0 Out-of-Bounds Write via Crafted Model","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"lightgbm-org","product":"LightGBM","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.7.0","versionType":"semver"}]}],"references":[{"url":"https://github.com/lightgbm-org/LightGBM/issues/7357","tags":["issue-tracking"],"name":"GitHub Issue #7357"},{"url":"https://github.com/lightgbm-org/LightGBM","tags":["product"]},{"url":"https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/include/LightGBM/tree.h#L691-L698","tags":["technical-description"],"name":"RecomputeLeafDepths writes at the bit-inverted child value with no bounds check"},{"url":"https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/src/io/tree.cpp#L750-L766","tags":["technical-description"],"name":"child and split arrays are parsed with only a length check"},{"url":"https://www.vulncheck.com/advisories/lightgbm-through-4.7.0-out-of-bounds-write-via-crafted-model","name":"VulnCheck Advisory: LightGBM through 4.7.0 Out-of-Bounds Write via Crafted Model","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"Out-of-bounds Write","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-16T20:32:43.282Z"},"datePublic":"2026-07-10T00:00:00.000Z","credits":[{"lang":"en","value":"George Chen","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-21T15:44:38.629081Z","id":"CVE-2026-92786","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-21T15:44:46.726Z"}}]}}}