CVE-2026-73234Public exploit

Arbitrary file write via unsanitized archive path

Published Aug 11, 2026 · Updated Aug 11, 2026

Path traversal in FreeCAD before 1.1.2 allows attackers to write arbitrary files when a user opens a crafted FCStd archive. PropertyFileIncluded::Restore() joins the archive-controlled file or data attribute to the document transient path without rejecting absolute paths, directory components, or parent traversal. Opening the archive is required, and writes run with the FreeCAD user's permissions, enabling replacement of user-writable configuration or startup files.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in FreeCAD before 1.1.2 allows attackers to write arbitrary files when a user opens a crafted FCStd archive. PropertyFileIncluded::Restore() joins the archive-controlled file or data attribute to the document transient path without rejecting absolute paths, directory components, or parent traversal. Opening the archive is required, and writes run with the FreeCAD user's permissions, enabling replacement of user-writable configuration or startup files.

The record

CVE
CVE-2026-73234
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
FreeCAD
Product
FreeCAD
Classifications
CWE-22, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.1.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

FreeCAD · FreeCADversion=< 1.1.2

Published CVSS scores

7.8GitHubCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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