A maliciously crafted DWG file can be used to write beyond the allocated buffer while parsing DWG files.

published 2021-06-25 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13813

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

A maliciously crafted DWG file can be used to write beyond the allocated buffer while parsing DWG files. The vulnerability exists because the application fails to handle a crafted DWG file, which causes an unhandled exception. An attacker can leverage this vulnerability to execute arbitrary code.

Patch / fix

fixed in 10

autodesk advance_steel 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
autodesk autocad 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
autodesk autocad_architecture 2019.1.3, 2020.1.4, 2021.1.1
autodesk autocad_electrical 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
autodesk autocad_lt 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
autodesk autocad_map_3d 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
autodesk autocad_mechanical 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
autodesk autocad_mep 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
autodesk autocad_plant_3d 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
autodesk civil_3d 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1

Exploit prediction

1.80% chance of exploitation in the next 30 days, higher than 78% 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 Autodesk Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD Architecture, AutoCAD Electrical, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD MEP, AutoCAD Plant 3D

Classification

Weakness

CWE-755 Improper Handling of Exceptional Conditions

References

autodesk.com /trust/security-advisories/adsk-sa-2022-0007
vendor-advisory

Sources

CVE List CVE-2021-27042
NVD CVE-2021-27042

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.

Summary