What’s Vulnerable › Vulnerabilities

CVE-2021-27043

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% 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-787

Description

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; 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
• Autodesk DWG TrueView: from 2022 before 2022.1.1 — fixed in 2022.1.1

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; Autodesk DWG TrueView 2022.1.1. 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

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