CVE-2021-27043: Autodesk Advance Steel

High severity, CVSS 7.8. EPSS: 0.9% chance of exploitation in the next 30 days.

An Arbitrary Address Write issue in the Autodesk DWG application can allow a malicious user to leverage the application to write in unexpected paths. In order to exploit this the attacker would need the victim to enable full page heap in the application.

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)
• Autodesk Dwg Trueview: from 2022, before 2022.1.1 (fixed in 2022.1.1)

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