What is CVE-2026-14647?

CVE-2026-14647 is a medium-severity vulnerability in Onnx, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.3/10. Published 2026-07-04.

How severe is CVE-2026-14647?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Buffer overflow in Onnx

CVE-2026-14647

A weakness has been identified in onnx up to 1.21.x. This vulnerability affects the function convPoolShapeInference_opset19 of the file onnx/defs/nn/old.cc of the component onnxruntime. This manipulation causes out-of-bounds read. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Patch name: a7bf3a0f1d18bb62575236ef6e4944980c40e045. It is recommended to apply a patch to fix this issue.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (17.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

N/a Onnx — versions 1.0, 1.1, 1.2

Weakness classification (CWE)

References

cna@vuldb.com (product)
cna@vuldb.com (patch)
cna@vuldb.com (issue-tracking, exploit)
cna@vuldb.com (issue-tracking, patch)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)

Frequently asked questions

What is CVE-2026-14647?: CVE-2026-14647 is a medium-severity vulnerability in Onnx, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.3/10. Published 2026-07-04.
How severe is CVE-2026-14647?: Medium severity. CVSS v3 base score is 4.3 out of 10.