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CVE-2026-63632

3.3 · LOW

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability.

Published Aug 18, 2026CWE-125EPSS 0.17%

Overview

CVE-2026-63632 is a low-severity vulnerability. It was published on August 18, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/onnx/onnx/commit/e9c74f596eaa0250f89e52a54160a25bbcb25b66GitHubgithub.com/onnx/onnx/pull/7880GitHubgithub.com/onnx/onnx/releases/tag/v1.22.0GitHubgithub.com/onnx/onnx/security/advisories/GHSA-p893-rvq9-2xf9GitHubgithub.com/onnx/onnx/security/advisories/GHSA-p893-rvq9-2xf9

How CyberStrike helps

Frequently asked questions

What is CVE-2026-63632?

CVE-2026-63632 is a low-severity vulnerability. It was published on August 18, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).

How severe is CVE-2026-63632?

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-63632?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-63632?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63632 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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