CVE-2021-27042: Autodesk Advance Steel

High severity, CVSS 7.8. EPSS: 1.8% chance of exploitation in the next 30 days.

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.

Affected products

• Autodesk Advance Steel: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)
• Autodesk Autocad: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)
• Autodesk Autocad Architecture: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, up to and including 2022.0.1
• Autodesk Autocad Electrical: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)
• Autodesk Autocad Lt: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)
• Autodesk Autocad Map 3d: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)
• Autodesk Autocad Mechanical: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)
• Autodesk Autocad Mep: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)
• Autodesk Autocad Plant 3d: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)
• Autodesk Civil 3d: from 2019, before 2019.1.3 (fixed in 2019.1.3); from 2020, before 2020.1.4 (fixed in 2020.1.4); from 2021, before 2021.1.1 (fixed in 2021.1.1); from 2022, before 2022.0.1 (fixed in 2022.0.1)

Published 2021-06-25. Last modified 2026-06-17.