What’s Vulnerable › Vulnerabilities

CVE-2021-27040

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% 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-125

Description

A maliciously crafted DWG file can be forced to read beyond allocated boundaries when parsing the DWG file. This vulnerability can be exploited 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
• Autodesk DWG TrueView: from 2022 before 2022.1.1 — fixed in 2022.1.1
• ICONICS and Mitsubishi Electric Corporation GENESIS64: through 10.97
• Mitsubishi Electric Corporation MC Works64: through 4.04e

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-2021-0004
• https://www.zerodayinitiative.com/advisories/ZDI-21-1236/
• https://www.zerodayinitiative.com/advisories/ZDI-21-1238/
• https://www.zerodayinitiative.com/advisories/ZDI-22-378/
• https://www.zerodayinitiative.com/advisories/ZDI-22-473/
• https://www.autodesk.com/trust/security-advisories/adsk-sa-2021-0004
• https://www.zerodayinitiative.com/advisories/ZDI-21-1236/
• https://www.zerodayinitiative.com/advisories/ZDI-21-1238/
• https://www.zerodayinitiative.com/advisories/ZDI-22-378/
• https://www.zerodayinitiative.com/advisories/ZDI-22-473/

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