CVE-2026-44512

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
8.9%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 13, 2026

Advisory Details (4)

Auto-updated Jul 8, 2026
🔬 Proof of concept available. Patch available. Sources: github_pr, github_release, github, github_commit.
github Patch Available🟡 PoC Available

Null Pointer Dereference in Multiple Version Converter Adapters Due to Missing Input Bounds Checks · Advisory · onnx/onnx · GitHub

https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77
github_release Patch Available

v1.22.0

Patch available: onnx/onnx v1.22.0

https://github.com/onnx/onnx/releases/tag/v1.22.0
github_pr

fix: add input/output bounds checks in version converter adapter

Fix merged in onnx/onnx PR #7813 on 2026-04-05 — awaiting tagged release

https://github.com/onnx/onnx/pull/7813
github_commit

commit cd310408165a (onnx/onnx)

Fix landed in onnx/onnx commit cd310408165a — awaiting tagged release

https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf

Vendor Advisories for CVE-2026-44512(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 15× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-15 01:22 UTCEG score recompute
  4. 2026-07-13 23:42 UTCEG score recompute
  5. 2026-07-13 22:30 UTCEPSS rescore
  6. 2026-07-13 06:13 UTCEPSS rescore
  7. 2026-07-12 22:01 UTCEG score recompute
  8. 2026-07-12 05:46 UTCEPSS rescore
  9. 2026-07-11 20:20 UTCEG score recompute
  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-10 18:40 UTCEG score recompute
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-09 16:59 UTCEG score recompute
  14. 2026-07-08 15:18 UTCEG score recompute
  15. 2026-07-07 13:38 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-44512?
CVE-2026-44512 is a medium vulnerability published on July 7, 2026. Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.9.0 before 1.22.0, onnx.versionconverter.convertversion() can dereference a null pointer in Upsample67::adaptupsample67() in onnx/versionconverter/adapters/upsample67.h when processing an untrusted…
When was CVE-2026-44512 disclosed?
CVE-2026-44512 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44512 actively exploited?
CVE-2026-44512 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44512?
CVE-2026-44512 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-44512?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44512, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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