{"apiVersion":"1.0","identifier":"CVE-2026-63632","description":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.3.0 until 1.22.0, onnx.version_converter.convert_version() can perform an out-of-bounds read in Gemm_7_6::adapt_gemm_7_6() in onnx/version_converter/adapters/gemm_7_6.h when a Gemm node has input tensors with fewer than two dimensions because B_shape[1], A_shape[0], or A_shape[1] is accessed without a rank check, potentially causing a process crash during an opset 7 to 6 downgrade. This issue is fixed in version 1.22.0.","publishedAt":"2026-08-18T15:16:56","lastModifiedAt":"2026-08-18T19:16:59","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63632","cvssScore":3.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","epssProbability":0.00163,"riskScore":0.33,"affectedProduct":"ONNX","affectedVersions":">=1.3.0,<1.22.0","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-63632","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-63632","en":"https://www.redsauce.net/en/cves/CVE-2026-63632","fr":"https://www.redsauce.net/fr/cves/CVE-2026-63632","pt":"https://www.redsauce.net/pt/cves/CVE-2026-63632","de":"https://www.redsauce.net/de/cves/CVE-2026-63632","sk":"https://www.redsauce.net/sk/cves/CVE-2026-63632","el":"https://www.redsauce.net/el/cves/CVE-2026-63632"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-63632"}}