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Fencer Vulns
high 7.8

CVE-2021-40160 json

PDFTron prior to 9.0.7 version may be forced to read beyond allocated boundaries when parsing a maliciously crafted PDF file.

published 2021-12-23 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27345

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

PDFTron prior to 9.0.7 version may be forced to read beyond allocated boundaries when parsing a maliciously crafted PDF file. This vulnerability can be exploited to execute arbitrary code.

Patch / fix

  • autodesk revit 2020.2.5, 2021.1.4, 2022.1
  • autodesk navisworks 2019.6, 2020.4, 2021.3, 2022.1
  • autodesk advance_steel 2022.1.1
  • autodesk autocad 2022.1.1, 2022.2
  • autodesk autocad_architecture 2022.1.1
  • autodesk autocad_electrical 2022.1.1
  • autodesk autocad_lt 2022.1.1, 2022.2
  • autodesk autocad_map_3d 2022.1.1
  • autodesk autocad_mechanical 2022.1.1
  • autodesk autocad_mep 2022.1.1
  • autodesk autocad_plant_3d 2022.1.1
  • autodesk civil_3d 2022.1.1

Exploit prediction

1.60% chance of exploitation in the next 30 days, higher than 76% 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 Revit, Navisworks, Autodesk® Advance Steel, AutoCAD®, AutoCAD® Architecture, AutoCAD® Electrical, AutoCAD® Map 3D, AutoCAD® Mechanical, AutoCAD® MEP, AutoCAD® Plant 3D, AutoCAD® LT, Autodesk® Civil 3D, AutoCAD® Mac, AutoCAD® LT for Mac

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.