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Fencer Vulns
high 7.8

CVE-2021-40166 json

A maliciously crafted PNG file in Autodesk Image Processing component may be used to attempt to free an object that has already been freed…

published 2022-10-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27351

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

A maliciously crafted PNG file in Autodesk Image Processing component may be used to attempt to free an object that has already been freed while parsing them. This vulnerability may be exploited by attackers to execute arbitrary code.

Patch / fix

  • autodesk autocad 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk autocad_advance_steel 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk autocad_architecture 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk autocad_civil_3d 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk autocad_electrical 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk autocad_lt 2019.1.4, 2020.1.5, 2020.3.2, 2021.1.2, 2021.2.2, 2022.1.2, 2022.2.2
  • autodesk autocad_map_3d 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk autocad_mechanical 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk autocad_mep 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk autocad_plant_3d 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.2
  • autodesk dwg_trueview 2019.1.4, 2020.1.5, 2021.1.2, 2022.1.1
  • autodesk fusion 2.0.11405
  • autodesk infrastructure_parts_editor 2019.2.2, 2020.0.2
  • autodesk infraworks 2019.3, 2020.2, 2021.2
  • autodesk inventor 2019.6, 2020.5, 2021.4, 2022.2
  • autodesk navisworks 2019.7, 2020.5, 2021.4, 2022.2
  • autodesk revit 2019.2.4, 2020.2.6, 2021.1.5
  • autodesk storm_and_sanitary_analysis 2020.3.1, 2021.3.1

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • n/a Revit, Inventor, Infraworks, Navisworks, Fusion, Infrastructure Parts Editors, Autodesk Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD Architecture, AutoCAD Electrical, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD MEP, AutoCAD Plant 3D

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.