FKIE_CVE-2026-63632

Vulnerability from fkie_nvd - Published: 2026-08-18 15:16 - Updated: 2026-08-18 19:16
Severity
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Summary
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.
References
security-advisories@github.comhttps://github.com/onnx/onnx/commit/e9c74f596eaa0250f89e52a54160a25bbcb25b66
security-advisories@github.comhttps://github.com/onnx/onnx/pull/7880
security-advisories@github.comhttps://github.com/onnx/onnx/releases/tag/v1.22.0
security-advisories@github.comhttps://github.com/onnx/onnx/security/advisories/GHSA-p893-rvq9-2xf9
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/onnx/onnx/security/advisories/GHSA-p893-rvq9-2xf9
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "onnx",
          "vendor": "onnx",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.3.0, \u003c 1.22.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-63632",
  "lastModified": "2026-08-18T19:16:59.787",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63632",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-18T18:51:22.894530Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-18T15:16:56.463",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onnx/onnx/commit/e9c74f596eaa0250f89e52a54160a25bbcb25b66"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onnx/onnx/pull/7880"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onnx/onnx/releases/tag/v1.22.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onnx/onnx/security/advisories/GHSA-p893-rvq9-2xf9"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/onnx/onnx/security/advisories/GHSA-p893-rvq9-2xf9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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