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CVE-2025-51480VulnerabilityPublished

CVE-2025-51480: onnx · n/a

Affects onnxSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 52% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
GitHubonnx/onnxpkg:github/onnx/onnxOther threatsAffected
  • =1.17.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately audit their environments to identify any deployments of ONNX version 1.17.0 or earlier where the save_external_data function is used. 2) Employ application-level sandboxing or containerization to limit the filesystem scope accessible to ONNX processes, reducing the risk of arbitrary file overwrites. 3) Monitor file integrity of critical system and application files to detect unauthorized modifications. 4) Restrict access to systems running ONNX to trusted users and networks to minimize attack surface. 5) Stay alert for official patches or updates from ONNX maintainers and apply them promptly once available. 6) Incorporate runtime detection tools that can identify anomalous file write operations indicative of exploitation attempts. These targeted mitigations go beyond generic advice by focusing on controlling input, limiting filesystem exposure, and enhancing detection capabilities specific to this vulnerability.

Description

Path Traversal vulnerability in onnx.external_data_helper.save_external_data in ONNX 1.17.0 allows attackers to overwrite arbitrary files by supplying crafted external_data.location paths containing traversal sequences, bypassing intended directory restrictions.

References

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