Vulnerability record · CVE-2026-44512 · published 8 July 2026

CVE-2026-44512: Linuxfoundation onnx null pointer dereference vulnerability

Linuxfoundation · Onnx

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.9.0 before 1.22.0, onnx.version_converter.convert_version() can dereference a null pointer in Upsample_6_7::adapt_upsample_6_7() in onnx/version_converter/adapters/upsample_6_7.h when processing an untrusted model with an Upsample node that has zero inputs, causing an unrecoverable denial of service. This issue is fixed in version 1.22.0.

5.5 CVSS 3.1 Medium EPSS 0.19% · top 92.0% CWE-476 · NULL pointer dereference

5.5CVSS 3.1 base score

0.19%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

5References, 2 tagged exploit

13 Jul 2026Last modified by NVD

Description

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Onnx Linuxfoundation

References

Link	Tags
https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf	Patch
https://github.com/onnx/onnx/pull/7813	Issue TrackingPatch
https://github.com/onnx/onnx/releases/tag/v1.22.0	ProductRelease Notes
https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77	ExploitVendor Advisory
https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77	ExploitVendor Advisory

Track CVE-2026-44512 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2026-28500Linuxfoundation onnx insufficient verification of data authenticity vulnerabilityOpen Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security con…EPSS 0.31%18 Mar 2026 9.1CVE-2024-27319Linuxfoundation onnx out-of-bounds read vulnerabilityVersions of the package onnx before and including 1.15.0 are vulnerable to Out-of-bounds Read as the ONNX_ASSERT and ONNX_ASSERTM functions have an o…EPSS 0.59%23 Feb 2024 8.8CVE-2025-51480Linuxfoundation onnx path traversal vulnerabilityPath Traversal vulnerability in onnx.external_data_helper.save_external_data in ONNX 1.17.0 allows attackers to overwrite arbitrary files by supplyin…EPSS 0.60%22 Jul 2025 8.8CVE-2024-5187Linuxfoundation onnx path traversal vulnerabilityA vulnerability in the `download_model_with_test_data` function of the onnx/onnx framework, version 1.16.0, allows for arbitrary file overwrite due t…EPSS 1.2%6 Jun 2024 8.7CVE-2026-27489Linuxfoundation onnx relative path traversal vulnerabilityOpen Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, a path traversal vulnerabilit…EPSS 0.62%1 Apr 2026 8.6CVE-2026-34445Linuxfoundation onnx improper input validation vulnerabilityOpen Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, the ExternalDataInfo class in…EPSS 0.51%1 Apr 2026 7.5CVE-2024-27318Linuxfoundation onnx path traversal vulnerabilityVersions of the package onnx before and including 1.15.0 are vulnerable to Directory Traversal as the external_data field of the tensor proto can hav…EPSS 1.2%23 Feb 2024 7.5CVE-2022-25882Linuxfoundation onnx path traversal vulnerabilityVersions of the package onnx before 1.13.0 are vulnerable to Directory Traversal as the external_data field of the tensor proto can have a path to th…EPSS 1.6%26 Jan 2023

Source: NIST National Vulnerability Database (record CVE-2026-44512), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.