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Fencer Vulns
high 7.8

CVE-2021-40158 json

A maliciously crafted JT file in Autodesk Inventor 2022, 2021, 2020, 2019 and AutoCAD 2022 may be forced to read beyond allocated boundarie…

published 2022-01-25 4 y ago modified 2026-10-08 31 d ago also EUVD-2021-27343

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

A maliciously crafted JT file in Autodesk Inventor 2022, 2021, 2020, 2019 and AutoCAD 2022 may be forced to read beyond allocated boundaries when parsing the JT file. This vulnerability in conjunction with other vulnerabilities could lead to code execution in the context of the current process.

Patch / fix

  • autodesk advance_steel 2022.1.2
  • autodesk autocad 2022.1.2
  • autodesk autocad_architecture 2022.1.2
  • autodesk autocad_electrical 2022.1.2
  • autodesk autocad_lt 2022.1.2
  • autodesk autocad_map_3d 2022.1.2
  • autodesk autocad_mechanical 2022.1.2
  • autodesk autocad_mep 2022.1.2
  • autodesk autocad_plant_3d 2022.1.2
  • autodesk civil_3d 2022.1.2
  • autodesk inventor 2022.2

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
31 d ago

Exploit prediction

2.89% chance of exploitation in the next 30 days, higher than 86% 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
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • n/a Inventor

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.