CVE-2024-23123: Autodesk Advance Steel

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A maliciously crafted CATPART file, when parsed in CC5Dll.dll and ASMBASE228A.dll through Autodesk AutoCAD, may force an Out-of-Bounds Write vulnerability. A malicious actor may leverage this vulnerability to cause a crash, cause data corruption, or execute arbitrary code in the context of the current process.

Affected products

• Autodesk Advance Steel: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)
• Autodesk Autocad: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)
• Autodesk Autocad Architecture: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)
• Autodesk Autocad Electrical: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)
• Autodesk Autocad Map 3d: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)
• Autodesk Autocad Mechanical: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)
• Autodesk Autocad Mep: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)
• Autodesk Autocad Plant 3d: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)
• Autodesk Civil 3d: from 2021, before 2021.1.4 (fixed in 2021.1.4); from 2022, before 2022.1.4 (fixed in 2022.1.4); from 2023, before 2023.1.5 (fixed in 2023.1.5); from 2024, before 2024.1.3 (fixed in 2024.1.3); from 2025, before 2025.0.1 (fixed in 2025.0.1)

Published 2024-02-22. Last modified 2026-06-17.