CVE-2026-73233Public exploitHinoki check available

Arbitrary code execution via backslash escape bypass

Published Aug 11, 2026 · Updated Aug 11, 2026

Code injection in FreeCAD before 1.1.2 allows attackers to execute arbitrary Python code through crafted FEM displacement formulas. TaskDlgFemConstraintDisplacement::accept() interpolates the x, y, and z formula fields into Python command strings after escaping quotation marks but leaving backslashes intact. A victim must accept the Displacement Constraint dialog; the injected code then runs with the FreeCAD process's privileges.

CVSS severity8.5
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Code injection in FreeCAD before 1.1.2 allows attackers to execute arbitrary Python code through crafted FEM displacement formulas. TaskDlgFemConstraintDisplacement::accept() interpolates the x, y, and z formula fields into Python command strings after escaping quotation marks but leaving backslashes intact. A victim must accept the Displacement Constraint dialog; the injected code then runs with the FreeCAD process's privileges.

The record

CVE
CVE-2026-73233
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
FreeCAD
Product
FreeCAD
Classifications
CWE-94, T1204, T1059.006
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

8.5GitHub, Inc.CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1204User Execution
T1059.006Command and Scripting Interpreter: Python

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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