What’s Vulnerable › Vulnerabilities

CVE-2021-27042

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-25 · updated 2026-06-17
• Weakness: CWE-755

Description

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; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
• Autodesk AutoCAD: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
• Autodesk AutoCAD Architecture: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 through 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1
• Autodesk AutoCAD Electrical: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
• Autodesk AutoCAD LT: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
• Autodesk AutoCAD MAP 3D: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
• Autodesk AutoCAD Mechanical: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
• Autodesk AutoCAD MEP: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
• Autodesk AutoCAD Plant 3D: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1
• Autodesk Civil 3D: from 2019 before 2019.1.3; from 2020 before 2020.1.4; from 2021 before 2021.1.1; from 2022 before 2022.0.1 — fixed in 2019.1.3, 2020.1.4, 2021.1.1, 2022.0.1

How to fix

Upgrade to a fixed version: 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. Check the vendor advisory for mitigations.

References

• https://www.autodesk.com/trust/security-advisories/adsk-sa-2022-0007
• https://www.autodesk.com/trust/security-advisories/adsk-sa-2022-0007

Get alerted when CVE-2021-27042 or the next vulnerability affects your stack